publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
2003-03-20 | Dephasing due to background charge fluctuations | In quantum computation, quantum coherence must be maintained during gate
operation. However, in physical implementations, various couplings with the
environment are unavoidable and can lead to a dephasing of a quantum
bit(qubit). The background charge fluctuations are an important dephasing
process, especially in a cha... | 0303412v1 |
2004-03-17 | Dynamical mean-filed approximation to small-world networks of spiking neurons: From local to global, and/or from regular to random couplings | By extending a dynamical mean-field approximation (DMA) previously proposed
by the author [H. Hasegawa, Phys. Rev. E {\bf 67}, 41903 (2003)], we have
developed a semianalytical theory which takes into account a wide range of
couplings in a small-world network. Our network consists of noisy $N$-unit
FitzHugh-Nagumo (FN)... | 0403415v3 |
2005-11-17 | Coupled-Cluster Theory for Systems of Bosons in External Traps | A coupled-cluster approach for systems of $N$ bosons in external traps is
developed. In the coupled-cluster approach the exact many-body wavefunction is
obtained by applying an exponential operator $\exp{T}$ to the ground
configuration $|\phi_0>$. The natural ground configuration for bosons is, of
course, when all resi... | 0511430v1 |
2006-02-27 | Effective Crystalline Electric Field Potential in a j-j Coupling Scheme | We propose an effective model on the basis of a $j$-$j$ coupling scheme to
describe local $f$-electron states for realistic values of Coulomb interaction
$U$ and spin-orbit coupling $\lambda$, for future development of microscopic
theory of magnetism and superconductivity in $f^n$-electron systems, where $n$
is the num... | 0602646v2 |
2006-10-30 | Complexity of Self-similar Hierarchical Ensembles | Within the framework of generalized combinatorial approach, the complexity is
determined for infinite set of self-similar hierarchical ensembles. This
complexity is shown to increase with strengthening of the hierarchy coupling to
the value, which decreases with growth of both scattering of this coupling and
non-extens... | 0610824v1 |
2006-11-06 | Spin relaxation in a generic two-dimensional spin-orbit coupled system | We study the relaxation of a spin density injected into a two-dimensional
electron system with generic spin-orbit interactions. Our model includes the
Rashba as well as linear and cubic Dresselhaus terms. We explicitly derive a
general spin-charge coupled diffusion equation. Spin diffusion is characterized
by just two ... | 0611165v1 |
2007-01-02 | Decoherence of a Spin Qubit Coupled with Spin Chain | In this report, we examine the relaxation phenomena of a spin qubit coupled
to a spin chain with a $1/r^2$ interaction. | 0701036v3 |
1994-05-05 | Classical and Quantum Solutions of Conformally Related Multidimensional Cosmological Models | Consider multidim. universes M= R x M_1 x ... x M_n with D = 1+ d_1 .. + d_n,
where M_i of dimension d_i are of have constant curvature and compact for i>1.
For Lagrangian models L(R,phi) on M which depend only on Ricci curvature R and
a scalar field phi, there exists an explicit description of conformal
equivalence, w... | 9405011v1 |
1996-01-10 | Primordial Density Fluctuations in Phase Coupling Gravity | In this paper we study the evolution of density perturbations in the
framework of Phase Coupling Gravity theory at the very early universe. We show
that these perturbation display an exponential-like behaviour. | 9601016v1 |
1996-09-26 | Gravitional coupling constant in higher dimensions | Assuming the equivalence of FRW-cosmological models and their Newtonian
counterparts, we propose using the Gauss law in arbitrary dimension a general
relation between the Newtonian gravitational constant G and the gravitational
coupling constant \kappa. | 9609061v1 |
1997-06-25 | Solutions of Quantum Gravity Coupled to the Scalar Field | We consider the Wheeler-De Witt equation for canonical quantum gravity
coupled to massless scalar field. After regularizing and renormalizing this
equation, we find a one-parameter class of its solutions. | 9706076v1 |
2002-06-29 | Bianchi - Euler system for relativistice fluids and Bel - Robinson type energy | We write a first order symmetric hyperbolic system coupling the Riemann with
the dynamical acceleration of a relativistic fluid. W determine the associated,
coupled, Bel - Robinson energy, and the integral equality that it satisfies. | 0207002v1 |
2006-08-11 | GL(3,R) gauge theory of gravity coupled with an electromagnetic field | Consistency of $GL(3,R)$ gauge theory of gravity coupled with an external
electromagnetic field, is studied. It is shown that possible restrictions on
Maxwell field can be avoided through introduction of auxiliary fields. | 0608057v1 |
2001-05-22 | Quartic Gauge Boson Couplings Results at LEP | The study of charged and neutral boson vertices has been performed in
different production channels at the LEP experiments. Decay rates and kinematic
properties of these events are exploited to set constraints on the
corresponding gauge couplings. | 0105063v1 |
1993-11-23 | Running Coupling in SU(3) Yang-Mills Theory | We report about our ongoing computation of running coupling constants in
asymptotically free theories using the recursive finite size scaling technique.
The latest results for the SU(3) Yang-Mills theory are presented. | 9311033v1 |
1994-08-21 | The (LATTICE) QCD Potential and Running Coupling: How to Accurately Interpolate between Multi-Loop QCD and the String Picture | We present a simple parameterization of a running coupling constant, defined
via the static potential, that interpolates between 2-loop QCD in the UV and
the string prediction in the IR. Besides the usual $\Lam$-parameter and the
string tension, the coupling depends on one dimensionless parameter,
determining how fast ... | 9408016v4 |
1997-09-29 | Scalar-gauge dynamics in (2+1) dimensions at small and large scalar couplings | We present the results of a detailed calculation of the excitation spectrum
of states with quantum numbers J^{PC}=0++, 1-- and 2++ in the three-dimensional
SU(2) Higgs model at two values of the scalar self-coupling and for fixed gauge
coupling. In the context of studies of the electroweak phase transition at
finite te... | 9709145v2 |
1999-11-26 | Renormalization group flow of SU(3) lattice gauge theory - Numerical studies in a two coupling space | We investigate the renormalization group (RG) flow of SU(3) lattice gauge
theory in a two coupling space with couplings $\beta_{11}$ and $\beta_{12}$
corresponding to $1\times 1$ and $1\times 2$ loops respectively. Extensive
numerical calculations of the RG flow are made in the fourth quadrant of this
coupling space, i... | 9911033v2 |
2003-07-10 | Diquark condensation at strong coupling | The possibility of diquark condensation at sufficiently large baryon chemical
potential and zero temperature is analyzed in QCD at strong coupling. In
agreement with other strong coupling analysis, it is found that a first order
phase transition separates a low density phase with chiral symmetry
spontaneously broken fr... | 0307019v2 |
1994-03-24 | QCD Accurately Predicts the Induced Pseudoscalar Coupling Constant | Using chiral Ward identities of QCD, we derive a relation for the induced
pseudoscalar coupling constant which is accurate within a few percent, $g_P =
8.44 \pm 0.16$. | 9403351v1 |
1994-09-22 | Threshold Effects on the QCD Coupling $α_{\overline{MS}}$ | The matching condition which determines the effect of a heavy quark threshold
on the running of the QCD coupling $\alpha_{\overline{MS}}$ is reviewed. The
matching scale is arbitrary to some extent. However, this affects the value of
$\alpha_{\overline{MS}}$ away from the threshold region only marginally. | 9409390v1 |
1995-11-30 | Renormalization group evolution of R-parity-violating Yukawa couplings | We study the evolution of $R$-parity-violating (RPV) couplings in the minimum
supersymmetric standard model, between the electroweak and grand unification
scales, assuming a family hierarchy for these coupling strengths. Particular
attention is given to solutions where both the $R$-conserving and $R$-violating
top quar... | 9511473v1 |
1996-05-23 | The Soft Pomeron | The soft pomeron successfully correlates a wide variety of data. Its
properties seem rather simple: it couples to single quarks and its coupling
factorises. | 9605383v1 |
1997-01-14 | Predictions for s-Wave and p-Wave Heavy Baryons from Sum Rules and Constituent Quark Model (I): Strong Interactions | We study the strong interactions of the L=1 orbitally excited baryons with
one heavy quark in the framework of the Heavy Hadron Chiral Perturbation
Theory. To leading order in the heavy mass expansion, the interaction
Lagrangian describing the couplings of these states among themselves and with
the ground state heavy b... | 9701291v2 |
1998-01-23 | A Model Independent Analysis of LEP and SLD Data on Z-Decays; is the Standard Model Confirmed? | A model independent analysis has been performed on the LEP and SLD data on Z
decays. Using only very weak theoretical assumptions, the effective vector and
axial-vector couplings of leptons, c quarks and b quarks have been extracted.
Although the lepton and c quark couplings agree well with Standard Model
predictions, ... | 9801403v2 |
1999-03-25 | Applications of the Reduction of Couplings | Applications of the principle of reduction of couplings to the standard model
and supersymmetric grand unified theories are reviewed. Phenomenological
applications of renormalization group invariant sum rules for soft
supersymmetry-breaking parameters are also reviewed. | 9903482v1 |
2002-01-23 | Measurements of the SUSY Higgs self-couplings and the reconstruction of the Higgs potential | We address the issue of the reconstruction of the scalar potential of a
two-Higgs doublet model having in mind that of the MSSM.
We first consider the general CP conserving dim-4 effective potential. To
fully reconstruct this potential, we show that even if all the Higgs masses and
their couplings to the standard mod... | 0201219v1 |
2005-04-11 | Coupling Unifications in Gauge-Higgs Unified Orbifold Models | Supersymmetric gauge theories, in higher dimensions compactified in an
orbifold, give a natural framework to unify the gauge bosons, Higgs fields and
even the matter fields in a single multiplet of the unifying gauge symmetry.
The extra dimensions and the supersymmetry are the two key ingredients for such
an unificatio... | 0504082v1 |
2005-09-13 | Stability of Subsequent-to-Leading-Logarithm Corrections to the Effective Potential for Radiative Electroweak Symmetry Breaking | We demonstrate the stability under subsequent-to-leading logarithm
corrections of the quartic scalar-field coupling constant $\lambda$ and the
running Higgs boson mass obtained from the (initially massless) effective
potential for radiatively broken electroweak symmetry in the
single-Higgs-Doublet Standard Model. Such ... | 0509122v2 |
2005-11-14 | Couplings of Vector-Spinor Representation for SO(10) Model Building | Higgs multiplet in the vector-spinor representations of SO(10), i.e., the
$144+\bar{144}$ multiplet can break the SO(10) gauge symmetry spontaneously in
one step down to the Standard Model gauge group symmetry $SU(3)_C\times
SU(2)_L\times U(1)_Y$ and a recent analysis has used such vector-spinors for
building a new cla... | 0511172v1 |
2006-06-02 | Evidence for infrared finite coupling in Sudakov resummation: a revised view-point | I show that Sudakov resummation takes a particularly transparent form if one
deals with the second logarithmic derivative of the short distance coefficient
functions for deep inelastic scattering and the Drell-Yan process. A uniquely
defined Sudakov exponent emerges, and I conjecture that the leftover constant
terms no... | 0606033v2 |
2006-12-15 | Reply to Comment on "Mass and K-Lambda Coupling of the N*(1535)" | Here we give our reply to the comment by Sibirtsev et al on our paper ``Mass
and K-Lambda Coupling of the N*(1535)". | 0612192v1 |
2007-02-17 | U-boson production in e+e- annihilations, psi and Upsilon decays, and Light Dark Matter | We recall how a new light gauge boson emerged in Supersymmetric extensions of
the Standard Model with an extra singlet superfield, and how it could behave
very much as a light pseudoscalar, with the corresponding symmetry broken at a
scale higher than electroweak.
Such a new gauge boson U, light and very weakly coupl... | 0702176v1 |
1991-10-11 | Correlation Functions of Local Operators in 2D Gravity Coupled to Minimal Matter | Recent advances are being discussed on the calculation, within the conformal
field theory approach, of the correlation functions for local operators in the
theory of 2D gravity coupled to the minimal models of matter. | 9110030v1 |
1991-10-12 | BRST Analysis of Physical States for 2D (Super) Gravity Coupled to (Super) Conformal Matter | We summarize some recent results on the BRST analysis of physical states of
2D gravity coupled to c<=1 conformal matter and the supersymmetric
generalization. | 9110031v1 |
1992-10-06 | Twisted Sector Yukawa Couplings for the $Z_3\times Z_3$ Orbifold | The moduli dependent Yukawa couplings between twisted sectors of the
$Z_3\times Z_3$ orbifold are studied. | 9210030v1 |
1993-01-19 | Twisted Sector Yukawa Couplings For The ${\bf Z}_M\times {\bf Z}_N$ Orbifolds | The moduli dependent Yukawa couplings between twisted sectors of ${\bf
Z}_M\times {\bf Z}_N$ Coxeter orbifolds are studied. | 9301079v1 |
1993-02-10 | Constrained Dynamics of the Coupled Abelian Two-Form | I present the reduction of phase space of the theory of an antisymmetric
tensor potential coupled to an abelian gauge field, using Dirac's procedure.
Duality transformations on the reduced phase space are also discussed. | 9302046v1 |
1993-04-26 | Wess-Zumino-Witten model off criticality | We study the renormalization group flow properties of the Wess-Zumino-Witten
model in the region of couplings between $g^2=0$ and $g^2=4\pi/k$, by
evaluating the two-loop Zamolodchikov's $c$-function. We also discuss the
region of negative couplings. | 9304127v1 |
1998-03-31 | On the value of coupling constant | Using an analogy between Bogomol'nyi bound and the harmonic oscillator in
quantum mechanics we propose a possible explanation of the coupling constant
numerical value at the grand unification scale. It is found to be $1/8\pi$. | 9803256v1 |
1998-05-25 | Coupling Constant Dependence in the Thermodynamics of N=4 Supersymmetric Yang-Mills Theory | The free energy of the maximally supersymmetric SU(N) gauge theory at
temperature T is expected to scale, in the large N limit, as N^2 T^4 times a
function of the 't Hooft coupling, f(g_{YM}^2 N). In the strong coupling limit
the free energy has been deduced from the near-extremal 3-brane geometry, and
its normalizatio... | 9805156v4 |
1999-03-10 | Reduction of Coupling Parameters and Duality | The general method of the reduction in the number of coupling parameters is
discussed. Using renormalization group invariance, theories with several
independent couplings are related to a set of theories with a single coupling
parameter. The reduced theories may have particular symmetries, or they may not
be related to... | 9903092v1 |
1999-04-23 | The Complete Brane Solution in D-dimensional Coupled Gravity System | In this letter we present the complete explicit brane solution in
D-dimensional coupled gravity system. | 9904157v1 |
2000-07-09 | Wess Zumino Couplings for Generalized Sigma Orbifold Fixed-points | The Wess-Zumino couplings for generalized sigma-orbifold fixed-points are
presented and the generalized GS 6-form that encoding the complete
sigma-standard gauge-gravitational-non standard gauge anomaly and its opposite
inflow is derived. | 0007068v1 |
2000-08-02 | On Chapline-Manton couplings: a cohomological approach | Chern-Simons couplings between Yang-Mills gauge fields and an abelian 2-form
are derived by means of cohomological arguments. | 0008022v1 |
2003-09-28 | Finiteness of quantum gravity coupled with matter in three spacetime dimensions | As it stands, quantum gravity coupled with matter in three spacetime
dimensions is not finite. In this paper I show that an algorithmic procedure
that makes it finite exists, under certain conditions. To achieve this result,
gravity is coupled with an interacting conformal field theory C. The Newton
constant and the ma... | 0309250v4 |
2004-10-27 | Unification of Gravitation, Gauge Field and Dark Energy | This paper is composed of two correlated topics: 1. unification of
gravitation with gauge fields; 2. the coupling between the daor field and other
fields and the origin of dark energy. After introducing the concept of ``daor
field" and discussing the daor geometry, we indicate that the complex daor
field has two kinds ... | 0410266v2 |
2005-12-06 | Exploring AdS Waves Via Nonminimal Coupling | We consider nonminimally coupled scalar fields to explore the Siklos
spacetimes in three dimensions. Their interpretation as exact gravitational
waves propagating on AdS restrict the source to behave as a pure radiation
field. We show that the related pure radiation constraints single out a unique
self-interaction pote... | 0512074v2 |
2006-02-24 | Dynamics of Flux Tubes in Large N Gauge Theories | The gluonic field created by a static quark anti-quark pair is described via
the AdS/CFT correspondence by a string connecting the pair which is located on
the boundary of AdS. Thus the gluonic field in a strongly coupled large N CFT
has a stringy spectrum of excitations. We trace the stability of these
excitations to ... | 0602255v3 |
2003-01-24 | Couplings of Uniform Spanniing Forests | We prove the existence of an automorphism-invariant coupling for the wired
and the free uniform spanning forests on Cayley graphs of finitely generated
residually amenable groups. | 0301291v2 |
2005-07-28 | Poisson fiber bundles and coupling Dirac structures | We give sufficient conditions for the existence of a Dirac structure on the
total space of a Poisson fiber bundle endowed with a compatible connection. We
also show that Cartan and Cartan-Hannay-Berry connections give rise to coupling
Dirac structures. | 0507594v1 |
2003-11-13 | Bifurcations due to small time-lag in coupled excitable systems | A system of ODE's is used to approximate the dynamics of two delayed coupled
FitzHugh-Nagumo excitable units, and study the relevant bifurcations. It is
shown that the Bautin bifurcation acts as the organizing center for the
dynamics of ODE's for small time-lags. | 0311025v1 |
2006-03-27 | Synchronization and time shifts of dynamical patterns for mutually delay-coupled fiber ring lasers | A pair of coupled erbium doped fiber ring lasers is used to explore the
dynamics of coupled spatiotemporal systems. The lasers are mutually coupled
with a coupling delay less than the cavity round-trip time. We study
synchronization between the two lasers in the experiment and in a delay
differential equation model of ... | 0603063v1 |
1996-04-17 | Meson-hyperon couplings in the bound-state approach to the Skyrme model | Strong pion and kaon couplings to hyperons are given in the bound-state
approach to the Skyrme model. | 9604022v1 |
2002-05-13 | Effective Screened Potentials of Strongly Coupled Semiclassical Plasma | The pseudopotentials of particle interaction of astrongly coupled
semiclassical plasma, taking into account bothquantum-mechanical effects of
diffraction at short distances andalso screening field effects at large
distances are obtained. Thelimiting cases of potentials are considered. | 0205036v1 |
2005-05-11 | Quantum Gauge Theory Amplitude Solutions | The $n$-point amplitudes of gauge and gravity theory are given as a series in
the coupling. The recursive derivative expansion is used to find all of the
coupling coefficients. Initial conditions to any bare Lagrangian, or of an
improved action, are used to compute quantum amplitudes. | 0505077v1 |
2005-08-14 | Recirculating BBU thresholds for polarized HOMs with optical coupling | We will derive the general theory of the beam-breakup instability in
recirculating linear accelerators with coupled beam optics and with polarized
higher order dipole modes. The bunches do not have to be at the same RF phase
during each recirculation turn. This is important for the description of energy
recovery linacs... | 0508089v1 |
2006-02-14 | The three-wave coupling coefficients for a cold magnetized plasma | The resonant interaction between three waves in a uniform magnetized plasma
is considered. Using the somewhat inaccessible result of the general theory we
deduce the explicit expressions for the coupling coefficients of a cold
magnetized two-component plasma. | 0602089v1 |
2000-02-23 | On the weak-coupling limit and complete positivity | We consider two non-interacting systems embedded in a heat bath. If they
remain dynamically independent, physical inconsistencies are avoided only if
the single-system reduced dynamics is completely positive also beyond the
weak-coupling limit. | 0002062v1 |
2003-01-27 | Two-Level System and Some Approximate Solutions in the Strong Coupling Regime | In this paper we treat the 2--level system interacting with external fields
without the rotating wave approximation and construct some approximate
solutions in the strong coupling regime. | 0301145v2 |
2004-09-27 | Quantum information processing by NMR using a 5-qubit system formed by dipolar coupled spins in an oriented molecule | Quantum Information processing by NMR with small number of qubits is well
established. Scaling to higher number of qubits is hindered by two major
requirements (i) mutual coupling among qubits and (ii) qubit addressability. It
has been demonstrated that mutual coupling can be increased by using residual
dipolar couplin... | 0409186v1 |
2007-04-04 | Solving The High Energy Evolution Equation Including Running Coupling Corrections | We study the solution of the nonlinear BK evolution equation with the
recently calculated running coupling corrections [hep-ph/0609105,
hep-ph/0609090]. Performing a numerical solution we confirm the earlier result
of [hep-ph/0408216] that the high energy evolution with the running coupling
leads to a universal scaling... | 0704.0612v2 |
2007-05-08 | Controllability of the coupled spin-half harmonic oscillator system | We present a control-theoretic analysis of the system consisting of a
two-level atom coupled with a quantum harmonic oscillator. We show that by
applying external fields with just two resonant frequencies, any desired
unitary operator can be generated. | 0705.1055v1 |
2007-05-14 | Wandering breathers and self-trapping in weakly coupled nonlinear chains: classical counterpart of macroscopic tunneling quantum dynamics | We present analytical and numerical studies of phase-coherent dynamics of
intrinsically localized excitations (breathers) in a system of two weakly
coupled nonlinear oscillator chains. We show that there are two qualitatively
different dynamical regimes of the coupled breathers, either immovable or
slowly-moving: the p... | 0705.1957v2 |
2007-07-11 | Comment about the "Gravity coupled to a scalar field in extra dimensions" paper | Wehus and Ravndal have argued that in d + 1 dimensions the general solution
for gravity minimally coupled to a scalar field can not be explicitly written
in Schwarzschild coordinates. We contest these objections. | 0707.1671v1 |
2007-07-27 | Summary of H1 Results on the Strong Coupling from Inclusive and Final States | Several determinations of the strong coupling from the H1 Collaboration are
reviewed. | 0707.4059v1 |
2007-08-20 | Three-State Feshbach Resonances Mediated By Second-Order Couplings | We present an analytical study of three-state Feshbach resonances induced by
second-order couplings. Such resonances arise when the scattering amplitude is
modified by the interaction with a bound state that is not directly coupled to
the scattering state containing incoming flux. Coupling occurs indirectly
through an ... | 0708.2638v2 |
2007-08-23 | The $J$-matrix inverse scattering approach for coupled channels with different thresholds | The inverse scattering method within the $J$-matrix approach to the two
coupled-channel problem is discussed. We propose a generalization of the
procedure to the case with different thresholds. | 0708.3113v1 |
2007-08-27 | Jahn-Teller effect versus Hund's rule coupling in C60N- | We propose variational states for the ground state and the low-energy
collective rotator excitations in negatively charged C60N- ions (N=1...5). The
approach includes the linear electron-phonon coupling and the Coulomb
interaction on the same level. The electron-phonon coupling is treated within
the effective mode appr... | 0708.3666v1 |
2007-10-28 | Some symmetry properties of spin currents and spin polarizations in multi-terminal mesoscopic spin-orbit coupled systems | We study theoretically some symmetry properties of spin currents and spin
polarizations in multi-terminal mesoscopic spin-orbit coupled systems. Based on
a scattering wave function approach, we show rigorously that in the equilibrium
state no finite spin polarizations can exist in a multi-terminal mesoscopic
spin-orbit... | 0710.5316v1 |
2007-11-09 | Linear response results for phonons and electron-phonon coupling in hcp Sc - spin fluctuations and implications for superconductivity | We present a study of the electronic structure, phonon frequencies and
electron-phonon coupling in hcp Sc under pressure. The electron-phonon coupling
constant is found to increase steadily with pressure in the hcp phase, until
the pressure reaches a value where the hcp phase becomes unstable. Calculations
for the norm... | 0711.1543v1 |
2007-11-19 | Generation and escape of local waves from the boundary of uncoupled cardiac tissue | We aim to understand the formation of abnormal waves of activity from
myocardial regions with diminished cell-to-cell coupling. In route to this
goal, we studied the behavior of a heterogeneous myocyte network in which a
sharp coupling gradient was placed under conditions of increasing network
automaticity. Experiments... | 0711.2945v1 |
2008-01-06 | Higgs self coupling measurement | A measurement of the Higgs self coupling from e+e- collisions in the
International Linear Collider is presented. The impact of the detector
performance in terms of $b$-tagging and particle flow is investigated. | 0801.0866v1 |
2008-08-21 | Padé expansion and nucleon-nucleon scattering in coupled channels | We extend our Pad\'e-aided analysis of the nonperturbative renormalization of
nucleon-nucleon scattering to the case of coupled channels. | 0808.2850v1 |
2008-09-10 | Multi-Loop Results, Charm- and Bottom-Quark Masses and the Strong Coupling Constant | The impact of recent multi-loop calculations on precise determinations of
charm- and bottom-quark masses and the strong coupling constant is discussed. | 0809.1780v2 |
2009-03-30 | Observation of strong coupling between a micromechanical resonator and an optical cavity field | Achieving coherent quantum control over massive mechanical resonators is a
current research goal. Nano- and micromechanical devices can be coupled to a
variety of systems, for example to single electrons by electrostatic or
magnetic coupling, and to photons by radiation pressure or optical dipole
forces. So far, all su... | 0903.5293v2 |
2009-04-08 | A note on coupled nonlinear Schrödinger systems under the effect of general nonlinearities | We prove the existence of non-trivial solutions to a system of coupled,
nonlinear, Schroedinger equations with general nonlinearity. | 0904.1346v3 |
2009-06-08 | Ultrastrong coupling regime of cavity QED with phase-biased flux qubits | We theoretically study a circuit QED architecture based on a superconducting
flux qubit directly coupled to the center conductor of a coplanar waveguide
transmission-line resonator. As already shown experimentally [Abdumalikov et
al. Phys. Rev. B 78, 180502 (2008)], the strong coupling regime of cavity QED
can readily ... | 0906.1383v2 |
2009-07-07 | Phase diagram of chiral quark matter: Fulde-Ferrell pairing from weak to strong coupling | We calculate the phase diagram of two-flavor quark matter in the
temperature-flavor asymmetry plane in the case where there are three competing
phases: the homogeneous Bardeen-Cooper-Schrieffer (BCS) phase, the unpaired
phase, and a phase with broken spatial symmetry, which is here taken to be the
counterpart of the Fu... | 0907.1260v1 |
2009-08-17 | The Spin-Torsion coupling and Causality for the Standard Model | We study the influence of the spin-torsion coupling prescription and we prove
the causal propagation for the fields of the standard model. | 0908.2349v2 |
2009-11-19 | Inverse Chaos Synchronization between Bidirectionally Coupled Variable Multiple Time Delay Systems | We make first report on inverse chaos synchronization between
bi-directionally non-linearly and linearly coupled variable multiple time delay
Ikeda systems.The results are of certain importance in secure chaos-based
communication systems. | 0911.3925v1 |
2010-04-05 | Galactic rotation curves in modified gravity with non-minimal coupling between matter and geometry | We investigate the possibility that the behavior of the rotational velocities
of test particles gravitating around galaxies can be explained in the framework
of modified gravity models with non-minimal matter-geometry coupling.
Generally, the dynamics of test particles around galaxies, as well as the
corresponding mass... | 1004.0576v1 |
2010-04-27 | Construction of a Microscopic Model for Yb and Tm Compounds on the Basis of a $\mib{j}$-$\mib{j}$ Coupling Scheme | We provide a prescription to construct a microscopic model for heavy
lanthanide systems such as Yb and Tm compounds by exploiting a $j$-$j$ coupling
scheme. Here we consider a situation with a large spin-orbit coupling, in which
$j$=5/2 sextet is fully occupied, while $j$=7/2 octet is partially occupied,
where $j$ deno... | 1004.4707v1 |
2010-06-03 | Running coupling and mass anomalous dimension of SU(3) gauge theory with two flavors of symmetric-representation fermions | We have measured the running coupling constant of SU(3) gauge theory coupled
to Nf=2 flavors of symmetric representation fermions, using the Schrodinger
functional scheme. Our lattice action is defined with hypercubic smeared links
which, along with the larger lattice sizes, bring us closer to the continuum
limit than ... | 1006.0707v3 |
2010-06-27 | Bidirectionally Coupled Variable Multiple Time Delay Systems and Inverse Chaos Synchronization | We present the first report on inverse chaos synchronization between
bi-directionally non-linearly and linearly coupled variable multiple time delay
Ikeda systems. The results are of certain importance in secure chaos-based
communication systems. | 1006.5238v1 |
2010-09-22 | A qubit strongly-coupled to a resonant cavity: asymmetry of the spontaneous emission spectrum beyond the rotating wave approximation | We investigate the spontaneous emission spectrum of a qubit in a lossy
resonant cavity. We use neither the rotating-wave approximation nor the Markov
approximation. The qubit-cavity coupling strength is varied from weak, to
strong, even to lower bound of the ultra-strong. For the weak-coupling case,
the spontaneous emi... | 1009.4366v1 |
2010-10-04 | Probing Lorentz Symmetry with Gravitationally Coupled Matter | Methods for obtaining additional sensitivities to Lorentz violation in the
fermion sector of the Standard-Model Extension using gravitational couplings
are discussed. | 1010.0464v1 |
2010-10-19 | Lorentz Symmetry and Matter-Gravity Couplings | This proceedings contribution summarizes recent investigations of Lorentz
violation in matter-gravity couplings. | 1010.3990v1 |
2010-11-14 | Running couplings and operator mixing in the gravitational corrections to coupling constants | The use of a running coupling constant in renormalizable theories is well
known, but the implementation of this idea for effective field theories with a
dimensional coupling constant is in general less useful. Nevertheless there are
multiple attempts to define running couplings including the effects of gravity,
with va... | 1011.3229v2 |
2010-12-01 | Effect of Randomness on Quantum Data Buses of Heisenberg Spin Chains | A strongly coupled spin chain can mediate long-distance effective couplings
or entanglement between remote qubits, and can be used as a quantum data bus.
We study how the fidelity of a spin-1/2 Heisenberg chain as a spin bus is
affected by static random exchange couplings and magnetic fields. We find that,
while non-un... | 1012.0288v2 |
2011-03-19 | Some Coupled Fixed Point Results on Partial Metric Spaces | In this paper we give some coupled fixed point results for mappings
satisfying different contractive conditions on complete partial metric spaces. | 1103.3772v1 |
2011-03-26 | Next-to-leading order QCD corrections to $tZ$ associated production via the flavor-changing neutral-current couplings at hadron colliders | We present the complete next-to-leading order (NLO) QCD corrections to $tZ$
associated production induced by the model-independent $tqg$ and $tqZ$
flavor-changing neutral-current couplings at hadron colliders, respectively.
Our results show that, for the $tuZ$ coupling the NLO QCD corrections can
enhance the total cros... | 1103.5122v2 |
2011-04-04 | Arnold diffusion in a pendulum lattice | The main model studied in this paper is a lattice of nearest neighbors
coupled pendula. For certain localized coupling we prove existence of energy
transfer and estimate its speed. | 1104.0580v1 |
2011-04-28 | Fractal properties in fundamental force coupling constants, in atomic energies, and in elementary particle masses | Using the discrete-scale invariance theory, we show that the coupling
constants of fundamental forces, the atomic masses and energies, and the
elementary particle masses, obey to the fractal properties. | 1104.5379v1 |
2011-05-02 | Diffractively coupled Fabry-Perot resonator with power-recycling | We demonstrate the optical coupling of two cavities without light
transmission through a substrate. Compared to a conventional coupling
component, that is a partially transmissive mirror, an all-reflective coupler
avoids light absorption in the substrate and therefore associated thermal
problems, and even allows the us... | 1105.0305v1 |
2011-06-21 | Analogs of noninteger powers in general analytic QCD | In contrast to the coupling parameter in the usual perturbative QCD (pQCD),
the coupling parameter in the analytic QCD models has cuts only on the negative
semiaxis of the Q^2-plane (where q^2 = -Q^2 is the momentum squared), thus
reflecting correctly the analytic structure of the spacelike observables. The
Minimal Ana... | 1106.4275v3 |
2011-07-06 | Tau Decay Determination of the QCD Coupling | The accurate determination of the strong coupling from tau decay data is
briefly reviewed. The present phenomenological status is summarized. | 1107.1123v1 |
2011-07-13 | BCS-BEC crossover in spin-orbit coupled two-dimensional Fermi gases | The recent experimental realization of spin-orbit coupling for ultra-cold
atoms has generated much interest in the physics of spin-orbit coupled
degenerate Fermi gases. Although recently the BCS-BEC crossover in
three-dimensional (3D) spin-orbit coupled Fermi gases has been intensively
studied, the corresponding two-di... | 1107.2627v3 |
2011-10-22 | su(3) intelligent states as coupled Su(3) coherent states | We extend previous work on intelligent states and show how to construct su(3)
intelligent states by coupling Su(3) coherent states. We also discuss some
properties of the resulting states. | 1110.4995v1 |
2012-06-26 | Transport and semiclassical dynamics of coupled quantum dots interacting with a local magnetic moment | We present a theory of magnetotransport through a system of two coupled
electronic orbitals, where the electron spin interacts with a (large) local
magnetic moment via an exchange interaction. For the physical realization of
such a set-up we have in mind, for example, semiconductor quantum dots coupled
to an ensemble o... | 1206.5994v2 |
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