id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
nucl-th/9410003 | Spin-Isospin Response Functions and the Effects of the $\Delta$-Hole
Configurations in Finite Nuclei | Effects of the delta-isobar $(\Delta)$ mixing on the spin-isospin response
functions in finite nuclei are studied in the quasi-elastic region. A method to
calculate the response function for a finite system composed of nucleon $(N)$
and $\Delta$ is formulated in a ring approximation. It is designed to treat the
$\Delta... | 1994-10-04 | 2008-11-26 | [
"nucl-th"
] | Kimiaki Nishida and Munetake Ichimura |
nucl-th/9410002 | Few-Body Physics -- Then and Now | A summary of the XIV\underline{th} International Conference on Few-body
Problems In Physics is given, with an emphasis on the important problems solved
recently and the prognosis for the future of the field. Personal remarks and
``homework'' problem assignments are made. | 1994-10-03 | 2015-06-26 | [
"nucl-th"
] | J. L. Friar |
nucl-th/9410001 | Two-body Mechanisms in Pion Photoproduction on the Trinucleon | A breakdown of the Impulse Approximation is studied in pion photoproduction
on $^3$He at high momentum transfers. The usual DWIA formalism with Faddeev
wave functions which works well for small momentum transfers deviates from
experimental measurements by up to two orders of magnitude for $Q^2>6 fm^{-2}$.
It is found t... | 1994-10-03 | 2009-10-28 | [
"nucl-th"
] | S.S. Kamalov, L. Tiator and C. Bennhold |
nucl-th/9409024 | Periodic Orbits and Shell Structure in Octupole Deformed Potentials | The effect of an octupole term in a quadrupole deformed single particle
potential is studied from the classical and quantum mechanical view point.
Whereas the problem is nonintegrable, the quantum mechanical spectrum
nevertheless shows some shell structure in the superdeformed prolate case for
particular, yet fairly la... | 1994-09-30 | 2009-10-28 | [
"nucl-th",
"chao-dyn",
"chem-ph",
"cond-mat",
"nlin.CD"
] | W.Dieter Heiss, Rashid G. Nazmitdinov and Stefanel Radu |
nucl-th/9409025 | Shell Structures and Chaos in Deformed Nuclei and Large Metallic
Clusters | A reflection-asymmetric deformed oscillator potential is analysed from the
classical and quantum mechanical point of view. The connection between
occurrence of shell structures and classical periodic orbits is studied using
the ''removal of resonances method'' in a classical analysis. In this
approximation, the effecti... | 1994-09-30 | 2015-06-26 | [
"nucl-th",
"chao-dyn",
"cond-mat",
"nlin.CD"
] | W. Dieter Heiss, Rashid G. Nazmitdinov and Stefanel Radu |
nucl-th/9409026 | Nuclear Coherent versus Incoherent Effects in Peripheral RHI Collisions | We derive simple and physically transparent expressions for the contribution
of the strong interaction to one nucleon removal processes in peripheral
relativistic heavy ion collisions. The coherent contribution,i.e, the
excitation of a giant dipole resonance via meson exchange is shown to be
negligible as well as inter... | 1994-09-30 | 2009-10-28 | [
"nucl-th"
] | M. E. Bracco and M. C. Nemes |
nucl-th/9409023 | Quantal Bifurcations in Rotational Spectra of Some Odd Atomic Nuclei | To show the existence of precursor phenomena of the transition order$\
to$chaos in atomic nuclei a simple analysis has been made, based on a recent
criterion proposed by Pavli\-chenkov. The basic idea is that nonlinear effects
in rotational bands should lead to bifurcation, which qualitatively changes the
spectrum for ... | 1994-09-29 | 2008-11-26 | [
"nucl-th"
] | M. Ferlini, V.R. Manfredi, G. Maino |
nucl-th/9409022 | Nucleon-Nucleon and Pion-Nucleon Potentials from Phase Shifts using
Quantum Inversion | NN and Pi-N partial wave radial potentials have been generated using the
latest SM94-VPI(NN) and FA93-VPI(Pi-N) phase shifts. The potentials are used to
determine the deuteron properties and to compute the 3H and 3He binding
energies. The e_1 mixing angles of SM94-VPI and NY93-Nijmegen differ
significantly and inversio... | 1994-09-27 | 2008-02-03 | [
"nucl-th"
] | M. Sander, C. Beck, B.C. Schroeder, H.-B. Pyo, H. Becker, J. Burrows,
H.V. von Geramb (Univ. of Hamburg, Germany), Y. Wu (Nihon Univ., Japan) and
S.Ishikawa (Tohoku Univ., Japan) |
nucl-th/9409020 | The Onset of Chaos with a Quadrupole--Quadrupole Interaction | The transition from order to chaos in atomic nuclei has been studied
analytically and numerically using a quadrupole--quadrupole residual
interaction. This interaction leads to chaotic behaviour, but the critical
energy $E_C\simeq 12.6$ MeV, corresponding to the onset of chaos, is higher
than that of the experimental o... | 1994-09-26 | 2009-09-25 | [
"nucl-th"
] | V.R. Manfredi, L. Salasnich |
nucl-th/9409021 | Binding energies and nonradiative decay rates of $H\! ed\mu $-molecular
ions | The method of hyperspherical "surface" functions has been applied to the
calculation of eigenvalues and eigenfunctions of muonic molecular ions
$^{3,4}\! H\! ed\mu $. Binding energies and nonradiative decay rates for the
states of the total angular momentum $L=0,~1,~2$ have been obtained. | 1994-09-26 | 2009-10-28 | [
"nucl-th"
] | V.B.Belyaev, O.I.Kartavtsev, V.I.Kochkin and E.A.Kolganova |
nucl-th/9409019 | Three-Body Halos. II. from Two- to Three-Body Asymptotics | The large distance behavior of weakly bound three-body systems is
investigated. The Schr\"{o}dinger equation and the Faddeev equations are
reformulated by an expansion in eigenfunctions of the angular part of a
corresponding operator. The resulting coupled set of effective radial equations
are then derived. Both two- a... | 1994-09-22 | 2008-11-26 | [
"nucl-th"
] | D.V.Fedorov, A.S.Jensen and K.Riisager (IFA, Aarhus University,
DK-8000 Aarhus C, Denmark) |
nucl-th/9409018 | Efimov States in Halo Nuclei | We investigate conditions for the occurrence of Efimov states in the recently
discovered halo nuclei. These states could appear in systems, where one neutron
is added to a pronounced one-neutron halo nucleus. Detailed calculations of the
properties of the states are presented and promising candidates are discussed. | 1994-09-22 | 2009-01-23 | [
"nucl-th"
] | D.V.Fedorov, A.S.Jensen and K.Riisager (IFA, Aarhus University,
DK-8000 Aarhus C, Denmark) |
nucl-th/9409017 | Nucleon-Nucleon Correlations and Six-Quark Cluster Effects in
Semi-Inclusive Deep Inelastic Lepton Scattering off Few-Nucleon Systems | Semi-inclusive deep inelastic lepton scattering off few-nucleon systems is
investigated assuming that virtual boson absorption occurs on a hadronic
cluster which can be either a two-nucleon correlated pair or a six-quark bag.
In both cases the relevance of nuclear effects on forward and backward nucleon
emissions is il... | 1994-09-21 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | C. Ciofi degli Atti and S. Simula |
nucl-th/9409016 | Nuclear Wobbling Motion and Electromagnetic Transitions | The nuclear wobbling motion is studied from a microscopic viewpoint. It is
shown that the expressions not only of the excitation energy but also of the
electromagnetic transition rate in the microscopic RPA framework can be cast
into the corresponding forms of the macroscopic rotor model. Criteria to
identify the rotat... | 1994-09-19 | 2009-10-28 | [
"nucl-th"
] | Yoshifumi R. Shimizu and Masayuki Matsuzaki |
nucl-th/9409015 | Two-Nucleon Solitary Wave Exchange Potentials(SWEPs) | A sine-Gordon solitary wave exchange NN potentials (SG SWEP) is presented as
an example of a large class of realistic potentials with four or less
parameters. SWEPs are derived from nonlinear quantum field theory developed by
Burt. SG SWEPs resemble Reid SC potentials and they reproduce high quality
phase shifts and de... | 1994-09-18 | 2009-09-25 | [
"nucl-th"
] | Mesgun Sebhatu |
nucl-th/9409014 | Final state interaction effects in $D(e,e'p)$ scattering | We present a systematic study of the final-state interaction (FSI) effects in
$D(e,e'p)$ scattering in the CEBAF energy range with particular emphasis on the
phenomenon of the angular anisotropy of the missing momentum distribution. We
find that FSI effects dominate at missing momentum $p_m \gsim 1.5 $fm$^{-1}$.
FSI ef... | 1994-09-15 | 2009-10-28 | [
"nucl-th"
] | A. Bianconi, S. Jeschonnek, N.N.Nikolaev, B.G.Zakharov |
nucl-th/9409013 | Charge Independence and Charge Symmetry | Charge independence and charge symmetry are approximate symmetries of nature,
violated by the perturbing effects of the mass difference between up and down
quarks and by electromagnetic interactions. The observations of the symmetry
breaking effects in nuclear and particle physics and the implications of those
effects ... | 1994-09-14 | 2016-11-03 | [
"nucl-th"
] | Gerald A. Miller and Willem T.H. van Oers |
nucl-th/9409010 | Time Invariant Scaling in Discrete Fragmentation Models | Linear rate equations are used to describe the cascading decay of an initial
heavy cluster into fragments. We consider moments of arbitrary orders of the
mass multiplicity spectrum and derive scaling properties pertaining to their
time evolution. We suggest that the mass weighted multiplicity is a suitable
observable f... | 1994-09-13 | 2008-11-26 | [
"nucl-th",
"hep-ph"
] | B.G. Giraud and R. Peschanski |
nucl-th/9409012 | Pion-Nucleon and Kaon-Nucleon Scattering Lengths in QCD Sum Rules | The pion-nucleon and kaon-nucleon scattering lengths are studied in the QCD
sum rule. We show that the leading and next-to-leading order terms of the OPE
give rise to the Tomozawa-Weinberg and sigma terms, respectively. We also show
that in the kaon-nucleon system the $\Lambda(1405)$ contribution has to be
subtracted f... | 1994-09-13 | 2008-11-26 | [
"nucl-th",
"hep-ph"
] | Y.Kondo, O.Morimatsu and Y.Nishino |
nucl-th/9409009 | Threshold Photo/Electro Pion Production - Working Group Summary | We summarize the pertinent experimental and theoretical developments in the
field of pion photo- and electroproduction in the threshold region. We discuss
which experiments and which calculations should be done/performed in the
future. | 1994-09-13 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | Ulf-G. Mei{\ss}ner and B. Schoch |
nucl-th/9409011 | Pushing and Cranking Corrections to the Meson Fields of the Bosonized
Nambu \& Jona-Lasinio Model | We study the effect of center-of-mass motion and rotational corrections on
hedgehog meson fields in the bosonized two-flavor Nambu \& Jona-Lasinio model.
To remove the spurious motion and to restore good spin and isospin we consider
a boosted and rotating soliton instead a static soliton at rest. Modified meson
fields ... | 1994-09-13 | 2008-02-03 | [
"nucl-th"
] | M.Schleif and R.Wuensch |
nucl-th/9409007 | Open Charm as a Probe of Pre-Equilibrium Dynamics in Nuclear Collisions? | The pre-equilibrium contribution to open charm production in nuclear
collisions at $\sqrt{s}=200$ AGeV is calculated using three different models
for the correlations between momentum and space-time coordinates. Ideal
(Bjorken) correlation between the rapidity $y$ and space-time rapidity $\eta$
of mini-jet gluons suppr... | 1994-09-09 | 2014-11-18 | [
"nucl-th"
] | Ziwei Lin and Miklos Gyulassy |
nucl-th/9409008 | Thermal photon production in high-energy nuclear collisions | We use a boost-invariant one-dimensional (cylindrically symmetric) fluid
dynamics code to calculate thermal photon production in the central rapidity
region of S+Au and Pb+Pb collisions at SPS energy ($\sqrt{s}=20$ GeV/nucleon).
We assume that the hot matter is in thermal equilibrium throughout the
expansion, but consi... | 1994-09-09 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | John J. Neumann, David Seibert, and George Fai (Center for Nuclear
Research, Kent State University) |
nucl-th/9409006 | Perturbative versus Lattice QCD Energy Density Correlators at High
Temperatures | Correlators of magnetic and electric field energy density are investigated
for SU($N_c$) gauge theory at high temperatures $T$. At separations $z\leq 2/T$
the correlators are shown to be dominated by a power--law behavior even for
finite gluon screening masses. This continuum behavior is well approximated on
current $4... | 1994-09-09 | 2009-10-09 | [
"nucl-th",
"hep-lat",
"hep-ph"
] | Dirk H. Rischke and Miklos Gyulassy |
nucl-th/9409005 | Study of 3he(e,e') Longitudinal Response Functions with the
Integral-Transform Method | The method of integral transforms is first applied for studying the $^3$He
longitudinal response functions. The transforms are calculated from localized
bound-state-type solutions to an inhomogenous Schr\"odinger-type three-body
equation. Several versions of local $s$-wave spin-dependent potentials
supplemented with a ... | 1994-09-08 | 2009-09-25 | [
"nucl-th"
] | V.Yu. Dobretsov, V.D. Efros and Bin Shao |
nucl-th/9409004 | Response Functions from Integral Transforms with a Lorentz Kernel | We propose to calculate inelastic response functions from the inversion of
their integral transform with a Lorentz kernel. The transform can be obtained
using bound-state type methods. Thus one does not need to solve the much more
complicated continuum problem with many open channels. Contrary to other
integral transfo... | 1994-09-07 | 2009-10-28 | [
"nucl-th"
] | Victor D. Efros, Winfried Leidemann and Giuseppina Orlandini |
nucl-th/9409003 | Chiral Symmetry in Nuclear Physics | The role of chiral symmetry in nuclear physics is summarized. The topics
treated are the chiral bag model for nucleon structure resulting from large
$N_c$ QCD, the pion cloud in chiral perturbation theory for low-energy
electroweak nuclear response functions, ``swelled hadrons" in nuclear matter,
chiral symmetry restor... | 1994-09-07 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | Mannque Rho |
nucl-th/9409002 | Comment on ``Specific Heat and Shape Transitions in Light sd Nuclei'' | This comment re-examines the origin of structure seen in the computed
specific heat of finite nuclei. In a recent paper, Civitarese and Schvellinger
suggest that such structure is due to model-space truncation in the
calculations. We reaffirm our conclusion that the structure is caused by a
collective-to-non-collective... | 1994-09-02 | 2007-05-23 | [
"nucl-th"
] | B. J. Cole, H. G. Miller and R. M. Quick (Department of Physics,
University of Pretoria, Pretoria 0002, South Africa) |
nucl-th/9409001 | The Determination of Nuclear Level Densities from Experimental
Information - | A novel Information Theory based method for determining the density of states
from prior information is presented. The energy dependence of the density of
states is determined from the observed number of states per energy interval and
model calculations suggest that the method is sufficiently reliable to
calculate the ... | 1994-09-02 | 2009-09-25 | [
"nucl-th"
] | B. J. Cole (Department of Physics, University of the Witwatersrand,
WITS 2050, South Africa), N. J. Davidson, H. G. Miller |
nucl-th/9408030 | Two-Body Correlations in Pionic Systems | In close analogy to fermionic many-body theory the truncation of the bosonic
BBGKY density matrix hierarchy on the two-body level leads to a coupled set of
nonlinear equations of motion for the one-body density matrix and the two-body
correlation function. These equations provide a nonperturbative description of
the no... | 1994-08-31 | 2009-10-28 | [
"nucl-th"
] | J.M. Haeuser, W. Cassing and A. Peter |
nucl-th/9408028 | The Axial Charge Renormalization in a Relativistic Description of Finite
Nuclei | Starting from a realistic One-Boson-Exchange model of the nucleon nucleon
interaction the relativistic mean field for nucleons is determined within the
Dirac Brueckner Hartree Fock approach for finite nuclei. The matrix elements of
the axial charge operator evaluated for the solutions of the Dirac equation
with this se... | 1994-08-29 | 2009-10-28 | [
"nucl-th"
] | A. Gil, M. Kleinmann, H. M"uther, E. Oset |
nucl-th/9408029 | Nucleation of Quark--Gluon Plasma from Hadronic Matter | The energy densities achieved during central collisions of large nuclei at
Brookhaven's AGS may be high enough to allow the formation of quark--gluon
plasma. Calculations based on relativistic nucleation theory suggest that rare
events, perhaps one in every 10$^2$ or 10$^3$, undergo the phase transition.
Experimental r... | 1994-08-29 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | J.I. Kapusta, R. Venugopalan and A.P. Vischer |
nucl-th/9408027 | Nearby Doorways, Parity Doublets and Parity Mixing in Compound Nuclear
States | We discuss the implications of a doorway state model for parity mixing in
compound nuclear states. We argue that in order to explain the tendency of
parity violating asymmetries measured in $^{233}$Th to have a common sign,
doorways that contribute to parity mixing must be found in the same energy
neighbourhood of the ... | 1994-08-28 | 2009-10-28 | [
"nucl-th"
] | N. Auerbach, J.D. Bowman and V. Spevak |
nucl-th/9408026 | Temperature dependence of the nuclear symmetry energy | We have studied the properties of A=54 and A=64 isobars at temperatures T
\leq 2 MeV via Monte Carlo shell model calculations with two different residual
interactions. In accord with empirical indications, we find that the symmetry
energy coefficient, b_{sym}, is independent of temperature to within 0.6 MeV
for T \leq ... | 1994-08-25 | 2009-10-28 | [
"nucl-th"
] | D.J. Dean, S.E. Koonin, K. Langanke, and P.B. Radha |
nucl-th/9408025 | The $\pi \pi$ S-Wave in the 1 to 2 GeV Region from a $\pi \pi$,
$\bar{K}K$ and $\rho \rho$($\omega \omega$) Coupled Channel Model | A simple $\pi \pi$, $\bar{K}K$, and $\rho \rho$($\omega \omega$) fully
coupled channel model is proposed to predict the isoscalar S-wave phase shifts
and inelasticities for $\pi \pi$ scattering in the 1.0 to 2.0 GeV region. The
S-matrix is required to exhibit poles corresponding to the established
isoscalar J$^{\pi}$ =... | 1994-08-25 | 2015-06-26 | [
"nucl-th"
] | W.M. Kloet and B. Loiseau |
nucl-th/9408024 | Consistent description of magnetic dipole properties in transitional
nuclei | It is shown that a consistent description of magnetic dipole properties in
transitional nuclei can be obtained in the interacting boson model-2 by F-spin
breaking mechanism, which is associated with differences between the proton and
neutron deformations. In particular, the long standing anomalies observed in
the $g$-f... | 1994-08-24 | 2009-10-28 | [
"nucl-th"
] | S. Kuyucak and A.E. Stuchbery |
nucl-th/9408023 | Gribov Confinement and Chiral Perturbation Theory | I discuss the chiral dynamics of Gribov's theory of confinement. At a
critical coupling $\alpha_s^c$ the light quark vacuum undergoes a series of
phase transitions which should be taken into account in the application of
chiral perturbation theory. The Gribov theory offers a simple explanation of
the value of the pion ... | 1994-08-23 | 2008-02-03 | [
"nucl-th",
"hep-ph"
] | S. D. Bass |
nucl-th/9408022 | Quantum Statistical Correlations for Slowly Expanding Systems | Quantum statistical correlations and momentum distributions are calculated
for a spherically symmetric, three-dimensionally expanding finite fireballs,
for non-relativistic expansions applying plane-wave approximation. The new
concepts of the geometrical temperature as well as the thermal radius are
presented for the s... | 1994-08-21 | 2010-11-19 | [
"nucl-th",
"hep-ph"
] | T. Csorgo B. Lorstad and J. Zimanyi |
nucl-th/9408020 | Collective Excitations and Ground State Correlations | A generalized RPA formalism is presented which treats pp and ph correlations
on an equal footing. The effect of these correlations on the single-particle
Green function is discussed and it is demonstrated that a self-consistent
treatment of the single-particle Green function is required to obtain stable
solutions. A si... | 1994-08-18 | 2009-10-28 | [
"nucl-th"
] | E. Heinz, H. M"uther, H.A. Mavromatis |
nucl-th/9408021 | Comparison of $K^+$ and $e^-$ Quasielastic Scattering | We formulate $K^+$-nucleus quasielastic scattering in a manner which closely
parallels standard treatments of $e^-$-nucleus quasielastic scattering. For
$K^+$ scattering, new responses involving scalar contributions appear in
addition to the Coulomb (or longitudinal) and transverse $(e,e')$ responses
which are of vecto... | 1994-08-18 | 2009-10-28 | [
"nucl-th"
] | J. Piekarewicz (Supercomputer Computations Research Institute, Florida
State University) and J. R. Shepard (Department of Physics, University of
Colorado) |
nucl-th/9408019 | Collapse of Flux Tubes | The dynamics of an idealized, infinite, MIT-type flux tube is followed in
time as the interior evolves from a pure gluon field to a $\overline q \ q$
plasma. We work in color U(1). $\overline q\ q$ pair formation is evaluated
according to the Schwinger mechanism using the results of Brink and Pavel. The
motion of the q... | 1994-08-17 | 2009-09-25 | [
"nucl-th"
] | L. Wilets and R. D. Puff (Department of Physics, FM-15, University of
Washington, Seattle WA) |
nucl-th/9408018 | Effects of Compression and Collective Expansion on Particle Emission
from Central Heavy-Ion Reactions | Conditions under which compression occurs and collective expansion develops
in energetic reactions of heavy nuclei, are analyzed, together with their
effects on emitted light baryons and pions. Within transport simulations, it is
shown that shock fronts perpendicular to beam axis form in head-on reactions.
The fronts s... | 1994-08-16 | 2008-11-26 | [
"nucl-th"
] | P. Danielewicz |
nucl-th/9408017 | Limits on the Domain of Coupling Constants for Binding N-Body Systems
with No Bound Subsystems | We study the domain of coupling constants for which a 3-body or 4-body system
is bound while none of its subsystems is bound. Limits on the size of the
domain are derived from a variant of the Hall--Post inequalities which relate
$N$-body to $(N-1)$-body energies at given coupling. Possible applications to
halo nuclei ... | 1994-08-16 | 2009-10-28 | [
"nucl-th"
] | Jean-Marc Richard (Grenoble) and Sonia Fleck (Lyon, France) |
nucl-th/9408014 | Fermion to boson mappings revisited | We briefly review various mappings of fermion pairs to bosons, including
those based on mapping operators, such as Belyaev-Zelevinskii, and those on
mapping states, such as Marumori; in particular we consider the work of
Otsuka-Arima-Iachello, aimed at deriving the Interacting Boson Model. We then
give a rigorous and u... | 1994-08-15 | 2009-09-25 | [
"nucl-th"
] | Joseph N. Ginocchio and Calvin W. Johnson |
nucl-th/9408016 | An accurate nucleon-nucleon potential with charge-independence breaking | We present a new high-quality nucleon-nucleon potential with explicit charge
dependence and charge asymmetry, which we designate Argonne $v_{18}$. The model
has a charge-independent part with fourteen operator components that is an
updated version of the Argonne $v_{14}$ potential. Three additional
charge-dependent and... | 1994-08-15 | 2009-09-25 | [
"nucl-th"
] | R.B.Wiringa, V.G.J.Stoks, and R.Schiavilla |
nucl-th/9408015 | Many-body effects in 16O(e,e'p) | Effects of nucleon-nucleon correlations on exclusive $(e,e'p)$ reactions on
closed-shell nuclei leading to single-hole states are studied using
$^{16}O(e,e'p)^{15}N$ ($6.32$ MeV, $3/2^-$) as an example. The quasi-hole wave
function, calculated from the overlap of translationally invariant many-body
variational wave fun... | 1994-08-15 | 2009-09-25 | [
"nucl-th"
] | M. Radici, S. Boffi, Steven C. Pieper, and V. R. Pandharipande |
nucl-th/9408013 | Electromagnetic Form Factor of the Nucleon in the Time-like Region | We explore the possibility to verify vector meson dominance for the nucleon
by measuring the half-off-shell form factor in the vector-meson mass region.
Cross sections for the process $\gamma p \rightarrow p + e^+e^-$ be presented. | 1994-08-12 | 2009-09-25 | [
"nucl-th"
] | M. Schaefer, H. C. Doenges and U. Mosel |
nucl-th/9408012 | Resonance Model for $\pi$N Scattering and $\eta$-Meson Production in the
s$_{11}$ Channel | A model for $\pi$N scattering and $\eta$-meson production in the S$_{11}$
channel is presented. The model includes $\pi$N-scattering Born terms as well
as the N$^*${} resonances S$_{11}$(1535) and S$_{11}$(1610). The $T$-matrix is
computed in the $K$-matrix approximation. The parameters of the model are
determined by f... | 1994-08-11 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | Ch. Sauermann, B.L. Friman and W. N\"orenberg |
nucl-th/9408011 | Muon to Electron Conversion; A Symbiosis of Particle and Nuclear Physics | $\mu-e$ conversion is the experimentally most interesting lepton flavor
violating process. From a theoretical point of view it is an interesting
interplay of particle and nuclear physics. The effective transition operator,
depending on the gauge model, is in general described in terms of a combination
of four terms of ... | 1994-08-10 | 2011-07-19 | [
"nucl-th"
] | T. S. Kosmas and J. D. Vergados |
nucl-th/9408010 | Simple classification of final state interaction effects in
$^4He(e,e'p)$ scattering | The radius of interaction between the struck proton and spectator nucleons is
close to the radius of short-distance two-nucleon correlations in nuclear
matter, which makes final state interaction(FSI) an important background to
production of protons with large missing momentum. We present a simple
classification of the... | 1994-08-08 | 2009-10-28 | [
"nucl-th"
] | A. Bianconi, S. Jeschonnek, N.N.Nikolaev, B.G.Zakharov |
nucl-th/9408009 | Higher Order Processes in Electromagnetic Production of Electron
Positron Pairs in Relativistic Heavy Ion Collisions | We study higher-order effects in the electromagnetic production of
electron-positron pairs in relativistic heavy ion collisions. Treating the
field of the heavy ions as an external field and neglecting the interaction
among electrons and positrons, we show that the $N$-pair creation amplitude is
the antisymmetrised pro... | 1994-08-08 | 2009-10-28 | [
"nucl-th"
] | Kai Hencken, Dirk Trautmann, and Gerhard Baur |
nucl-th/9408008 | The Spin-Dependent Structure Functions of Nuclei in the Meson-Nucleon
Theory | A theoretical approach to the investigation of spin-dependent structure
functions in deep inelastic scattering of polarized leptons off polarized
nuclei, based on the effective meson-nucleon theory and operator product
expansion method, is proposed and applied to deuteron and $^3He$. The explicit
forms of the moments o... | 1994-08-05 | 2009-09-25 | [
"nucl-th"
] | L.P. Kaptari, A.Yu. Umnikov, C. Ciofi degli Atti, S. Scopetta, and
K.Yu. Kazakov |
nucl-th/9408007 | Exotic Atom Formation in External Electric Fields | Validity of the coalescence model of exotic atom formation in the ion
collisions is studied . An estimate is given for the rates of P state
production in the electric fields of the colliding ions . Possibilities of
quantum beat effects are indicated . The results may be of interest in the
experimental search for pioniu... | 1994-08-04 | 2019-08-15 | [
"nucl-th"
] | Jaroslaw Kulpa, Slawomir Wycech |
nucl-th/9408006 | Inclusive Aand Semi-Inclusive Deep Inelastic Scattering at Cebaf at
Higher Energies | We summarize the discussion on the possibilities of doing inclusive and
semi-inclusive deep inelastic scattering experiments at CEBAF with beam energy
of the order of 10 GeV. | 1994-08-04 | 2009-09-25 | [
"nucl-th"
] | B. Frois and P.J. Mulders |
nucl-th/9408004 | Color Transparency Effects in Quasi-elastic Nuclear Reactions | Previous work on color transparency is reviewed briefly with an emphasis on
aspects related to an upgrade of CEBAF. | 1994-08-03 | 2007-05-23 | [
"nucl-th"
] | Gerald A. Miller |
nucl-th/9408002 | Loosely bound hyperons in the SU(3) Skyrme model | Hyperon pairs bound in deuteron like states are obtained within the SU(3)
Skyrme model in agreement with general expectations from boson exchange models.
The central binding from the flavor symmetry breaking terms increases with the
strangeness contents of the interacting baryons whereas the kinetic non-linear
$\sigma$... | 1994-08-03 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | B. Schwesinger, F.G. Scholtz and H.B. Geyer |
nucl-th/9408003 | A Microscopic T-Violating Optical Potential: Implications for
Neutron-Transmission Experiments | We derive a T-violating P-conserving optical potential for neutron-nucleus
scattering, starting from a uniquely determined two-body $\rho$-exchange
interaction with the same symmetry. We then obtain limits on the T-violating
$\rho$-nucleon coupling $\overline{g}_{\rho}$ from neutron-transmission
experiments in $^{165}$... | 1994-08-03 | 2009-10-28 | [
"nucl-th"
] | J. Engel, C.R. Gould, and V. Hnizdo |
nucl-th/9408005 | Pion interferometry with pion-source-medium interactions | An extended pion source, which can be temporarily created by a high energy
nuclear collision, will also absorb and distort the outgoing pions. We discuss
how this effect alters the interferometric pattern of the two-pion momentum
correlation function. In particular, we show that the two-pion correlation
function decrea... | 1994-08-03 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | M.-C. Chu, S. Gardner, T. Matsui, and R. Seki |
nucl-th/9408001 | The Be7(p,gamma)B8 cross section and the properties of Be7 | We study the nonresonant part of the $^7$Be($p,\gamma$)$^8$B reaction using a
three-cluster resonating group model that is variationally converged and
virtually complete in the $^4$He+$^3$He+$p$ model space. The importance of
using adequate nucleon-nucleon interaction is demonstrated. We find that the
low-energy astrop... | 1994-08-02 | 2009-09-25 | [
"nucl-th"
] | A. Csoto, K. Langanke, S.E. Koonin, and T.D. Shoppa |
nucl-th/9407041 | Pion Cloud Contribution to K+ Nucleus Scattering | A careful reanalysis is done of the contribution to $K^{+}$ nucleus
scattering from the interaction of the kaon with the virtual pion cloud. The
usual approximations made in the evaluation of the related kaon selfenergy are
shown to fail badly. We also find new interaction mechanisms which provide
appreciable correctio... | 1994-07-29 | 2009-09-25 | [
"nucl-th"
] | C.Garcia-Recio, J.Nieves and E.Oset |
nucl-th/9407040 | Low energy theorem for scalar and vector interactions of a composite
spin-1/2 system | Scalar and vector interactions, with the scalar interaction coupled to a
composite spin-1/2 system so as to cause a shift of its mass, are shown to obey
a low-energy theorem which guarantees that the second order interaction due to
z-graphs is the same as for a point Dirac particle. Off-shell and contact
interactions a... | 1994-07-27 | 2014-11-18 | [
"nucl-th"
] | S. J. Wallace, Franz Gross and J. A. Tjon |
nucl-th/9407039 | Essential Strangeness in Nucleon Magnetic Moments | Effective quark magnetic moments are extracted from experimental measurements
as a function of the strangeness magnetic moment of the nucleon. Assumptions
made in even the most general quark model analyses are ruled out by this
investigation. Ab initio QCD calculations demand a non-trivial role for strange
quarks in th... | 1994-07-25 | 2009-10-28 | [
"nucl-th",
"hep-lat",
"hep-ph"
] | Derek B. Leinweber |
nucl-th/9407038 | A gauge invariant unitary theory for pion photoproduction | The Ward-Takahashi identities are central to the gauge invariance of the
photoproduction amplitude. Here we demonstrate that unitarity and in particular
the inclusion of both the $\pi N$ and $\gamma\pi N$ thresholds on equal footing
yields a photoproduction amplitude that satisfies both two-body unitarity and
the gener... | 1994-07-25 | 2009-09-25 | [
"nucl-th"
] | C. H. M. van Antwerpen and I. R. Afnan |
nucl-th/9407037 | Effects of nuclear structure on average angular momentum in subbarrier
fusion | We investigate the effects of nuclear quadrupole and hexadecapole couplings
on the average angular momentum in sub-barrier fusion reactions. This quantity
could provide a probe for nuclear shapes, distinguishing between prolate vs.
oblate quadrupole and positive vs. negative hexadecapole couplings. We describe
the data... | 1994-07-21 | 2009-10-28 | [
"nucl-th"
] | A.B. Balantekin, J.R. Bennett, and S. Kuyucak |
nucl-th/9407036 | Flow of Nucleons and Fragments in 40Ar + 27Al Collisions Studied with
AMD | Collective transverse momentum flow of nucleons and fragments in intermediate
energy 40Ar + 27Al collisions is calculated with the antisymmetrized molecular
dynamics (AMD). The observed flow and its balance energy are reproduced very
well by the calculation with the Gogny force which corresponds to the soft EOS
of the ... | 1994-07-21 | 2009-10-28 | [
"nucl-th"
] | A. Ono and H. Horiuchi |
nucl-th/9407034 | Chiral perturbation in dense matter and meson condensation controversy | An outstanding problem in the study of possible kaon condensation is the
striking discrepancy between the results of chiral perturbation theory and
those of the PCAC-plus-current-algebra approach. I discuss here what causes
this discrepancy and what needs to be done to solve the problem. In addition, I
point out the im... | 1994-07-20 | 2007-05-23 | [
"nucl-th"
] | Kuniharu Kubodera |
nucl-th/9407035 | An updated analysis of NN elastic scattering data to 1.6 GeV | An energy-dependent and set of single-energy partial-wave analyses of $NN$
elastic scattering data have been completed. The fit to 1.6~GeV has been
supplemented with a low-energy analysis to 400 MeV. Using the low-energy fit,
we study the sensitivity of our analysis to the choice of $\pi NN$ coupling
constant. We also ... | 1994-07-20 | 2010-04-06 | [
"nucl-th"
] | Richard A. Arndt, Igor I. Strakovsky, and Ron Workman |
nucl-th/9407033 | Heavy Quarkonia in the Instantaneous Bethe-Salpeter Model | The heavy quarkonia (Charmonium \(c\bar{c}\) and Bottomonium \(b\bar{b}\))
are investigated in the framework of the instantaneous BS-equation (Salpeter
equation). We parametrize confinement alternatively by a linearly rising scalar
or a vector interaction kernel and take into account the one-gluon-exchange
(OGE) intera... | 1994-07-20 | 2011-07-19 | [
"nucl-th",
"hep-ph"
] | J.Resag, C.R.Muenz |
nucl-th/9407030 | Inversion Potential Analysis of the Nuclear Dynamics in the Triton | We report 3H binding energy calculations using inversion potentials generated
from phase shifts corresponding to contemporary nucleon-nucleon potentials as
well as modern phase shift analyses. We place limits upon local potential
triton binding energy calculations due to the underlying uncertainties in their
fit to the... | 1994-07-19 | 2008-11-26 | [
"nucl-th"
] | B.F. Gibson, H. Kohlhoff, H.V. von Geramb and G.L. Payne |
nucl-th/9407032 | Analysis of $\pi$d elastic scattering data to 500 MeV | An energy-dependent and a set of single-energy partial-wave analyses of
$\pi$d elastic scattering data have been completed. Amplitudes are presented
for pion laboratory kinetic energies up to 500~MeV. These results are compared
with those found in other recent analyses. We comment on the present database
and make sugge... | 1994-07-19 | 2009-09-25 | [
"nucl-th"
] | Richard A. Arndt Igor I. Strakovsky, and Ron Workman |
nucl-th/9407031 | Production of Eta-Mesons in Collisions of Nucleons and Delta-Resonances | We calculate the cross section for the production of $\eta$-mesons via
\mbox{$\Delta N \to N N \eta$} in a relativistic One-Boson-Exchange-Model.
Using this cross section we then determine the probability for the production
of an $\eta$-meson by a $\Delta$-resonance moving in nuclear matter. The result
is compared to p... | 1994-07-19 | 2009-10-28 | [
"nucl-th"
] | W. Peters, U. Mosel, A. Engel |
nucl-th/9407029 | On the Macroscopic Limit of Nuclear Dissipation | The Landau-Vlasov equation is applied to a slab of width $L$. This geometry
is introduced to simulate somehow the finiteness of real nuclei but to allow
for analytical solutions, nevertheless. We focus on the damping of low
frequency surface modes and discuss their friction coefficient. For this
quantity we study the m... | 1994-07-19 | 2009-10-28 | [
"nucl-th"
] | Valery I. Abrosimov and Helmut Hofmann |
nucl-th/9407027 | Simultaneous Projectile-Target Excitation in Heavy Ion Collisions | We calculate the lowest-order contribution to the cross section for
simultaneous excitation of projectile and target nuclei in relativistic heavy
ion collisions. This process is, to leading order, non-classical and adds
incoherently to the well-studied semi-classical Weizs\"acker-Williams cross
section. While the leadi... | 1994-07-18 | 2009-09-25 | [
"nucl-th"
] | C. J. Benesh and J.L. Friar |
nucl-th/9407026 | Dynamics of Fragment Formation in the Nuclear Spinodal Region | The Vlasov-Nordheim equation is solved numerically on a lattice for nuclear
matter in two dimensions. We discuss the reliability of the model at normal
density and then study the response of the system to small perturbations. We
find deterministic chaos inside the spinodal zone where fragment formation
occurs. We discu... | 1994-07-18 | 2009-09-25 | [
"nucl-th"
] | M. Baldo, G. F. Burgio and A. Rapisarda |
nucl-th/9407028 | A Wilson Renormalization Group Approach to Light-Front Tamm-Dancoff
Scalar Field Theory | A program to utilize the Tamm-Dancoff approximation, on the light-front, to
solve relativistic quantum field theories, is presented. We present a well
defined renormalization program for the Tamm-Dancoff approximation. This
renormalization program utilizes a Minkowski space version of Wilson's
renormalization group. We... | 1994-07-18 | 2009-10-28 | [
"nucl-th"
] | Edsel A. Ammons |
nucl-th/9407025 | Quantum Effects in the Stochastic Behaviour of Nuclear Matter at Finite
Excitations\FOOTNOTE | We examine the dynamics of statistical fluctuations in nuclear matter. Linear
response functions for the average phase space density are derived within
Landau theory. Properties of the stochastic forces are deduced from the quantal
fluctuation dissipation theorem, with a suitable generalization to unstable
modes. Sizab... | 1994-07-15 | 2009-10-28 | [
"nucl-th"
] | Dieter Kiderlen and Helmut Hofmann |
nucl-th/9407024 | Constraint Correlation Dynamics of SU(N) Gauge Theories | A constraint correlation dynamics up to 4-point Green functions is proposed
for SU(N) gauge theories which reduces the N-body quantum field problem to the
two-body level. The resulting set of nonlinear coupled equations fulfills all
conservation laws including fermion number, linear and angular momenta as well
as the t... | 1994-07-14 | 2015-06-26 | [
"nucl-th"
] | S.J. Wang, W. Cassing, J.M. Haeuser, A. Peter, M.H. Thoma |
nucl-th/9407023 | Pionic Content of Rho-N-N and Rho-N-Delta Vertex Functions | The dynamical content of rho-N-N and rho-N-Delta vertex functions is studied
with a mesonic model. A set of coupled integral equations satisfied by these
vertex functions were solved self-consistently. These soulutions indicate that
the dominant mesonic content arises from di-pion dynamics. With the
experimentally dete... | 1994-07-13 | 2009-10-28 | [
"nucl-th"
] | Q. Haider and L.C. Liu |
nucl-th/9407022 | Neutrinoless Double Beta Decay in Heavy Deformed Nuclei | The zero neutrino mode of the double beta decay in heavy deformed nuclei is
investigated in the framework of the pseudo SU(3) model, which has provided an
accurate description of collective nuclear structure and predicted half-lives
for the two neutrino mode in good agreement with experiments. In the case of
$^{238}U$ ... | 1994-07-12 | 2009-10-28 | [
"nucl-th"
] | Jorge G. Hirsch, O. Casta\~nos and P. O. Hess |
nucl-th/9407021 | The Role of the $\Delta(1920)$ Resonance for Kaon Production in Heavy
Ion Collisions | The long mean free path of $K^+$ mesons in nuclear matter makes this particle
a suitable messenger for the dynamics of nucleus-nucleus reactions at
intermediate energies (100 MeV to 3 GeV per nucleon). A prerequisite for this
is the knowledge of the elementary production cross sections $\pi N \rightarrow
\Sigma K$. Her... | 1994-07-12 | 2009-10-28 | [
"nucl-th"
] | K. Tsushima, S.W. Huang and Amand Faessler |
nucl-th/9407020 | Resonance Model of $\pi \Delta \rightarrow Y K$ for Kaon Production in
Heavy Ion Collisions | The elementary production cross sections $\pi \Delta \rightarrow Y K$
$(Y=\Sigma,\,\, \Lambda)$ and $\pi N \rightarrow Y K$ are needed to describe
kaon production in heavy ion collisions. The $\pi N \rightarrow Y K$ reactions
were studied previously by a resonance model. The model can explain the
experimental data quit... | 1994-07-12 | 2009-10-28 | [
"nucl-th"
] | K. Tsushima, S.W. Huang and Amand Faessler |
nucl-th/9407019 | Democratic Decay | Results of some recent investigations of democratic three-body decays of
nuclear systems are discussed. In particular, we consider experimental studies
of three-body ($\alpha+N+N$)-decay of $A=6$ nuclei and $J$-matrix calculations
of monopole excitations in $^{12}$C and $E1$ transitions in $^{11}$Li in the
three-body-c... | 1994-07-10 | 2007-05-23 | [
"nucl-th"
] | Andrey M.Shirokov (Institute for Nuclear Physics, Moscow State
University, Moscow 119899, Russia) |
nucl-th/9407018 | The relativistic transport model description of subthreshold kaon
production in heavy-ion collisions | The relativistic transport model, in which the nucleon effective mass is
connected to the scalar field while its energy is shifted by the vector
potential, is extended to include the kaon degree of freedom. We further take
into account the medium modification of the kaon mass due to the explicit
chiral symmetry breakin... | 1994-07-08 | 2011-07-19 | [
"nucl-th"
] | X. S. Fang, C. M. Ko, G. Q. Li, and Y. M. Zheng |
nucl-th/9407016 | Can dileptons reveal the in-medium properties of vector mesons? | Dilepton production from both pion-pion and kaon-antikaon annihilation in
heavy-ion collisions is studied using the relativistic transport model. The
formation of a rho meson from pion-pion annihilation and a phi meson from
kaon-antikaon annihilation, their propagation in the medium, and their decay
into dileptons are ... | 1994-07-08 | 2009-10-28 | [
"nucl-th"
] | G. Q. Li and C. M. Ko |
nucl-th/9407017 | Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon | Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon is studied in
the relativistic Vlasov-Uehling-Uhlenbeck model. The self-energies of the
antiproton are determined from the nucleon self-energies by the G-parity
transformation. Also, the final-state interactions of the antiproton including
both rescattering ... | 1994-07-08 | 2009-09-25 | [
"nucl-th"
] | G. Q. Li and C. M. Ko |
nucl-th/9407015 | Phase-Space Exploration in Nuclear Giant Resonance Decay | The rate of phase-space exploration in the decay of isovector and isoscalar
giant quadrupole resonances in $^{40}$Ca is analyzed. The study is based on the
time dependence of the survival probability and of the spectrum of generalized
entropies evaluated in the space of 1p-1h and 2p-2h states. If the 2p-2h
background s... | 1994-07-08 | 2009-10-28 | [
"nucl-th"
] | S. Drozdz, S. Nishizaki, J.Speth and J. Wambach |
nucl-th/9407014 | Heavy resonance production in high energy nuclear collisions | We estimate freezeout conditions for $s$, $c$, and $b$ quarks in high energy
nuclear collisions. Freezeout is due either to loss of thermal contact, or to
particles ``wandering'' out of the region of hot matter. We then develop a
thermal recombination model in which both single-particle (quark and antiquark)
and two-pa... | 1994-07-07 | 2008-11-26 | [
"nucl-th",
"hep-ph"
] | David Seibert and George Fai (Center for Nuclear Research, Department
of Physics, Kent State University, Kent, OH) |
nucl-th/9407013 | 6Li Inelastic Form Factors in a Cluster Model | Longitudinal and transverse form factors are calculated for the transition
into the low lying excited T=0 and T=1 states of 6Li in the framework of the
resonating group model. All form factors are reproduced simultaneously using
three cluster-wavefunctions. Meson exchange currents yield only minor
corrections and do no... | 1994-07-07 | 2009-09-25 | [
"nucl-th"
] | S. Weber, M. Kachelriess, M. Unkelbach and H.M. Hofmann |
nucl-th/9407012 | Microscopic Model of the Time Like Electromagnetic Form Factor of the
Nucleon | A microscopic model of the electromagnetic form factor of the nucleon is
developed in a hadronic framework, including pions, nucleons and the
Delta-resonance explicitly. The space like on-shell form factors are reproduced
and predictions for the half off-shell dependence are made. The impact of this
off-shell dependenc... | 1994-07-06 | 2009-09-25 | [
"nucl-th"
] | H. C. Doenges, M. Schaefer, and U. Mosel |
nucl-th/9407011 | Soft dipole mode in $^{11}$Li and three body continuum | Properties of the neutron rich $^{11}$Li nucleus are calculated in the
framework of the cluster model $^{9}$Li $+n+n$. The formalism of the harmonic
oscillator representation of the scattering theory is used for the description
of bound and continuum spectrum states in the three-body-democratic-decay
approximation. It ... | 1994-07-06 | 2007-05-23 | [
"nucl-th"
] | Yu.A.Lurie, A.M.Shirokov, and Yu.F.Smirnov (Institute for Nuclear
Physics, Moscow State University, Moscow, 119899, Russia) |
nucl-th/9407007 | Relativistic Deuteron Structure Function | We calculate the unpolarised deep inelastic structure function of a
relativistic deuteron within a covariant framework. An exact treatment of
nucleon off-shell effects is shown to give corrections to the widely-used
convolution model, even in impulse approximation. Neglecting off-shell effects
in the extraction of the ... | 1994-07-05 | 2008-11-26 | [
"nucl-th",
"hep-ph"
] | W.Melnitchouk (U. Regensburg), A.W.Schreiber (PSI) and A.W.Thomas (U.
Adelaide) |
nucl-th/9407010 | Electromagnetic Hadron Mass Differences and Estimation of Isotopic
Symmetry Violation Parameters of QCD Vacuum from Quark Model | The estimations of the light quark mass differences, $m_d-m_u$, and the light
quark condensate differences, $<\bar DD> - <\bar UU>$, are obtained in the
framework of the \qm\ with QCD vacuum induced \q\ \ia . We consider long - wave
condensate and short - wave \s\ contributions to the electromagnetic \hn\ mass
\di s an... | 1994-07-05 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | A. E. Dorokhov |
nucl-th/9407009 | Quark Hadron Phase Transition and Hybrid Stars | We investigate the properties of hybrid stars consisting of quark matter in
the core and hadron matter in outer region. The hadronic and quark matter
equations of state are calculated by using nonlinear Walecka model and chiral
colour dielectric (CCD) model respectively. We find that the phase transition
from hadron to... | 1994-07-05 | 2015-06-26 | [
"nucl-th"
] | Sanjay K. Ghosh, S. C. Phatak and Pradip K. Sahu |
nucl-th/9407008 | A transport theory of relativistic nucleon-nucleon collisions with
confinement | A transport theory is developed on the quark level to describe
nucleon--nucleon collisions. We treat the strong interaction effectively by the
Friedberg-Lee model both in its original and in its modified confining version.
First we study the stability of the static three-dimensional semiclassical
configuration, then we... | 1994-07-05 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | T. Vetter T. S. Biro U. Mosel |
nucl-th/9407005 | Anomalous Isotope Shifts in Pb Nuclei in RMF Theory | We have studied the anomalous behaviour of isotopic shifts of Pb nuclei in
the relativistic mean field theory. It has been shown that the relativistic
mean field provides an excellent description of the anomalous kink in the
isotopic shifts about $^{208}$Pb. This is in contrast from density-dependent
Skyrme forces whic... | 1994-07-04 | 2009-09-25 | [
"nucl-th"
] | G.A. Lalazissis, M.M. Sharma, J. Koenig and P. Ring (Physik
Department, Technische Universitaet Muenchen and Max Planck Institut fuer
Astrophysik, Garching bei Muenchen) |
nucl-th/9407006 | A Relativistic Approach to Deep Inelastic Scattering on the Deuteron | A covariant field theoretical approach to deep inelastic scattering on the
deuteron is presented. The deuteron structure function is calculated in terms
of the Bethe-Salpeter amplitude. Numerical calculations for the nucleon
contribution are made with a realistic model of the $NN$-interaction, including
$\pi$-, $\rho$-... | 1994-07-04 | 2011-07-19 | [
"nucl-th",
"hep-ph"
] | A.Yu. Umnikov, L.P. Kaptari, K.Yu. Kazakov and F.C. Khanna |
nucl-th/9407003 | The nucleon as a relativistic quark-diquark bound state with an exchange
potential | Treating the quark and diquark as elementary particles, the Bethe-Salpeter
equation for the nucleon is solved numerically. The dependence of the mass on
the diquark mass and on the coupling constants is investigated. The resulting
relativistic quark-diquark-nucleon vertex is presented and discussed. | 1994-07-01 | 2009-10-28 | [
"nucl-th"
] | H. Meyer |
nucl-th/9407002 | Friedel Oscillations in Relativistic Nuclear Matter | We calculate the low-momentum N-N effective potential obtained in the OBE
approximation, inside a nuclear plasma at finite temperature, as described by
the relativistic $ \sigma $-$ \omega $ model. We analyze the screening effects
on the attractive part of the potential in the intermediate range as density or
temperatu... | 1994-07-01 | 2019-08-15 | [
"nucl-th"
] | J. Diaz Alonso, E. Gallego and A. Perez |
nucl-th/9407004 | New Shell Structure Originated from the Combination of Quadrupole and
Octupole Deformations | Semiclassical analysis of the shell structure for a reflection-asymmetric
deformed oscillator potential with irrational frequency ratio
$\omega_\perp/\omega_z=\sqrt{3}$ is presented. Strong shell effects associated
with bifurcations of short periodic orbits are found, which occur for a
combination of quadrupole and oct... | 1994-07-01 | 2009-10-28 | [
"nucl-th",
"chao-dyn",
"nlin.CD"
] | Ken-ichiro Arita (Department of Physics, Kyoto University, Kyoto,
Japan) |
nucl-th/9407001 | Relativistic treatment of spin-transfer observables in quasielastic
$(\vec{\bf p},\vec{\bf n})$ scattering | We calculate all spin-transfer observables for the quasielastic
$(\vec{p},\vec{n})$ reaction in a relativistic plane-wave impulse
approximation. The nuclear-structure information is contained in a large set of
nuclear-response functions that are computed in nuclear matter using a
relativistic random-phase approximation... | 1994-07-01 | 2009-09-25 | [
"nucl-th"
] | C.J. Horowitz and J. Piekarewicz |
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