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Three-Body Recombination of Identical Bosons with a Large Positive
Scattering Length at Nonzero Temperature: For identical bosons with a large scattering length, the dependence of the
3-body recombination rate on the collision energy is determined in the
zero-range limit by universal functions of a single scaling var... | cond-mat_other |
Correlation energy of two electrons in a ball: We study the ground-state correlation energy $E_{\rm c}$ of two electrons of
opposite spin confined within a $D$-dimensional ball ($D \ge 2$) of radius $R$.
In the high-density regime, we report accurate results for the exact and
restricted Hartree-Fock energy, using a Hyl... | cond-mat_other |
The influence of the optical Stark effect on chiral tunneling in
graphene: The influences of intense coherent laser fields on the transport properties
of a single layer graphene are investigated by using the finite-difference
time-domain method. Under an intense laser field, the valence band and
conduction band state... | cond-mat_other |
Formation of vortices in a dense Bose-Einstein condensate: A relaxation method is employed to study a rotating dense Bose-Einstein
condensate beyond Thomas-Fermi approximation. We use a slave-boson model to
describe the strongly interacting condensate and derive a generalized
non-linear Schr\"odinger equation with kine... | cond-mat_other |
Electrically probing photonic bandgap phenomena in contacted defect
nanocavities: We demonstrate an electrically tunable two dimensional photonic crystal
nanocavity containing InAs self assembled quantum dots. Photoluminescence and
electroluminescence measurements are combined to probe the cavity mode
structure and d... | cond-mat_other |
Graphite vs graphene: scientific background: Nobel Prize in Physics 2010 was given for "groundbreaking experiments
regarding the two-dimensional material graphene." In fact, before graphene has
been extracted from graphite and measured, some of its fundamental physical
properties have already been experimentally uncove... | cond-mat_other |
Collisional de-excitation in a quasi-2D degenerate Bose gas: We separate a Bose-Einstein condensate into an array of 2D sheets using a 1D
optical lattice, and then excite quantized vibrational motion in the direction
normal to the sheets. Collisions between atoms induce vibrational
de-excitation, transferring the large... | cond-mat_other |
The Fast Wandering of Slow Birds: I study a single "slow" bird moving with a flock of birds of a different, and
faster (or slower) species. I find that every "species" of flocker has a
characteristic speed $\gamma\ne v_0$, where $v_0$ is the mean speed of the
flock, such that, if the speed $v_s$ of the "slow" bird equa... | cond-mat_other |
Fermi Condensates: Ultracold atomic gases have proven to be remarkable model systems for
exploring quantum mechanical phenomena. Experimental work on gases of fermionic
atoms in particular has seen large recent progress including the attainment of
so-called Fermi condensates. In this article we will discuss this recent... | cond-mat_other |
Matter Wave Interference Pattern in the collision of bright solitons
(Bose Einstein condensates) in a time dependent trap: We show that it is possible to observe matter wave interference patterns in
the collision of bright solitons (Bose Einstein condensates) without free
ballistic expansion for suitable choices of s... | cond-mat_other |
Hyperspherical Description of the Degenerate Fermi Gas: S-wave
Interactions: We present a unique theoretical description of the physics of the spherically
trapped $N$-atom degenerate Fermi gas (DFG) at zero temperature based on an
ordinary Schr\"{o}dinger equation with a microscopic, two body interaction
potential. W... | cond-mat_other |
Boson Representation of Spin Operators: The derivation of the boson representation of spin operators is given which
reproduces the Holstein-Primakoff and Dyson-Maleev transformations in the
corresponding cases. The suggested formalism allows to address some subtle
issues which appear crucial for treating certain class ... | cond-mat_other |
On the absorption spectrum of noble gases at the arc spectrum limit: Rydberg spectral lines of an atom are sometimes superimposed on the
continuous spectrum of a different configuration. Effects of interaction among
different configurations in one of these cases are theoretically investigated,
and a formula is obtained... | cond-mat_other |
Theory of correlations between ultra-cold bosons released from an
optical lattice: In this paper we develop a theoretical description of the correlations
between ultra-cold bosons after free expansion from confinement in an optical
lattice. We consider the system evolution during expansion and give criteria
for a far... | cond-mat_other |
Nonlinear Quantum Electrodynamics in Dirac materials: Classical electromagnetism is linear. However, fields can polarize the vacuum
Dirac sea, causing quantum nonlinear electromagnetic phenomena, e.g.,
scattering and splitting of photons, that occur only in very strong fields
found in neutron stars or heavy ion collide... | cond-mat_other |
Classical and quantum dynamics of pulsating instability in a
Bose-Einstein condensate in an optical lattice: We study the dynamics of a Bose-Einstein condensate (BEC) in a one
dimensional optical lattice in the limit of weak atom-atom interactions.
Numerically we find that a BEC may develop a pulsating instability in... | cond-mat_other |
The Structure of Integrable One-Dimensional Systems: We explain the relationship between the classical description of an
integrable system in terms of invariant tori and action-angle variables, and
the quantum description in terms of the asymptotic Bethe ansatz. | cond-mat_other |
Electronic Control and Readout of Qubit States in Solid State Quantum
Computing Systems: We demonstrate that an $n^+/i/n^+$ junction is the most suitable candidate
for electronic control and readout of qubit states in quantum computing systems
based on shallow impurities. The signature of this system is that the
$n^+... | cond-mat_other |
Numerical study of magnetic field induced ordering in BaCuSi$_2$O$_6$
and related systems: Thermodynamics of spin dimer system BaCuSi_2O_6 is studied using a quantum
Monte Carlo calculation (QMC) and a bond-operator mean field theory. We propose
that a new type of boson, which, rather than being hard-core, allows up ... | cond-mat_other |
Magnetism and structure of magnetic multilayers based on the fully spin
polarized Heusler alloys Co2MnGe and Co2MnSn: Our Introduction starts with a short general review of the magnetic and
structural properties of the Heusler compounds which are under discussion in
this book. Then, more specifically, we come to the ... | cond-mat_other |
Coexisting Non-Equilibrium Condensates with Long-Range Spatial Coherence
in Semiconductor Microcavities: Real and momentum space spectrally resolved images of microcavity polariton
emission in the regime of condensation are investigated under non resonant
excitation using a laser source with reduced intensity fluctua... | cond-mat_other |
Annealing Effect for Supersolid Fraction in $^4$He: We report on experimental confirmation of the non-classical rotational
inertia (NCRI) in solid helium samples originally reported by Kim and Chan. The
onset of NCRI was observed at temperatures below ~400 mK. The ac velocity for
initiation of the NCRI suppression is e... | cond-mat_other |
Pairing fluctuations and the superfluid density through the BCS-BEC
crossover: We derive an expression for the superfluid density of a uniform two-component
Fermi gas through the BCS-BEC crossover in terms of the thermodynamic potential
in the presence of an imposed superfluid flow. Treating the pairing
fluctuations ... | cond-mat_other |
Coherent tunneling by adiabatic passage in an optical waveguide system: We report on the first experimental demonstration of light transfer in an
engineered triple-well optical waveguide structure which provides a classic
analogue of Coherent Tunnelling by Adiabatic Passage (CTAP) recently proposed
for coherent transpo... | cond-mat_other |
Introduction to Spin-Polarized Ballistic Hot Electron Injection and
Detection in Silicon: Ballistic hot electron transport overcomes the well-known problems of
conductivity and spin lifetime mismatch that plagues spin injection in
semiconductors with ferromagnetic ohmic contacts. Through the spin-dependent
mean-free-... | cond-mat_other |
Semiclassical atom theory applied to solid-state physics: Using the semiclassical neutral atom theory, we extend to fourth order the
modified gradient expansion of the exchange energy of density functional
theory. This expansion can be applied both to large atoms and solid-state
problems. Moreover, we show that it can ... | cond-mat_other |
Quantum computing without qubit-qubit interactions: Quantum computing tries to exploit entanglement and interference to process
information more efficiently than the best known classical solutions.
Experiments demonstrating the feasibility of this approach have already been
performed. However, finding a really scalable... | cond-mat_other |
Mechanism of Electric Field Induced Conductance Transition in Molecular
Organic Semiconductor Based Thin Films: We have studied the electrical field induced conductance transition in thin
film of Perylenetetracarboxylic dianhydride sandwiched between two metal
electrodes, from an insulating state to conducting state ... | cond-mat_other |
The system of mobile ions in lattice models: Screening effects,
thermodynamic and electrophysical properties: The lattice fluid model of the system with short range and long range Coulomb
interactions is suggested. In the framework of the collective variables method,
the screening of the Coulomb interactions in the b... | cond-mat_other |
Lattice solitons in quasicondensates: We analyze finite temperature effects in the generation of bright solitons in
condensates in optical lattices. We show that even in the presence of strong
phase fluctuations solitonic structures with well defined phase profile can be
created. We propose a novel family of variationa... | cond-mat_other |
Comment on "Exact results for survival probability in the multistate
Landau-Zener model": We correct the proof of Brundobler-Elser formula (BEF) provided in [2004
\textit{J. Phys. B: At. Mol. Opt. Phys.} \textbf{37} 4069] and continued in
Appendix of [2005 \textit{J. Phys. B: At. Mol. Opt. Phys.} \textbf{38} 907].
Af... | cond-mat_other |
Onset of thermally driven self-motion of a current filament in a
bistable semiconductor structure: We perform an analytical investigation of the bifurcation from static to
traveling current density filaments in a bistable semiconductor structure with
S-shaped current-voltage characteristic. Joule self-heating of a se... | cond-mat_other |
On non-markovian nature of stock trading: Using a relationship between the moments of the probability distribution of
times between the two consecutive trades (intertrade time distribution) and the
moments of the distribution of a daily number of trades we show, that the
underlying point process generating times of the... | cond-mat_other |
On reality of dynamical matrix: The symmetry properties of the dynamical matrix are well described in
multiple classic textbooks. This short paper revisits the issue to demonstrate
alternative form of dynamical matrix which explicitly shows its symmetry and
reality in common cases. | cond-mat_other |
Wave equation of the scalar field and superfluids: The new formal analogy between superfluid systems and cosmology, which
emerges by taking into account the back-reaction of the vacuum to the quanta of
sound waves \cite{noi}, enables us to put forward some common features between
these two different areas of physics. W... | cond-mat_other |
Matter sound waves in two-component Bose-Einstein condensates: The creation and propagation of sound waves in two-component Bose-Einstein
condensates (BEC) are investigated and a new method of wave generation in
binary BEC mixtures is proposed. The method is based on a fast change of the
inter-species interaction const... | cond-mat_other |
Spin-polarized transport in ferromagnetic multilayered semiconductor
nanostructures: The occurrence of inhomogeneous spin-density distribution in multilayered
ferromagnetic diluted magnetic semiconductor nanostructures leads to strong
dependence of the spin-polarized transport properties on these systems. The
spin-de... | cond-mat_other |
Quantum dynamics in view of Einstein's theory of Brownian motion: A quantum-mechanical version of Einstein's 1905 theory of Brownian motion is
presented. Starting from the Hamiltonian dynamics of an isolated composite of
objective and environmental systems, subdynamics for the objective system is
derived in the spirit ... | cond-mat_other |
Transport in ultradilute solutions of $^3$He in superfluid $^4$He: We calculate the effect of a heat current on transporting $^3$He dissolved in
superfluid $^4$He at ultralow concentration, as will be utilized in a proposed
experimental search for the electric dipole moment of the neutron (nEDM). In
this experiment, a ... | cond-mat_other |
Comparison of strong coupling regimes in bulk GaAs, GaN and ZnO
semiconductor microcavities: Wide bandgap semiconductors are attractive candidates for polariton-based
devices operating at room temperature. We present numerical simulations of
reflectivity, transmission and absorption spectra of bulk GaAs, GaN and ZnO
... | cond-mat_other |
Absorbing photonic crystals for thin film photovoltaics: The absorption of thin hydrogenated amorphous silicon layers can be
efficiently enhanced through a controlled periodic patterning. Light is trapped
through coupling with photonic Bloch modes of the periodic structures, which
act as an absorbing planar photonic cr... | cond-mat_other |
Bose Einstein Condensation of incommensurate solid 4He: It is pointed out that simulation computation of energy performed so far
cannot be used to decide if the ground state of solid 4He has the number of
lattice sites equal to the number of atoms (commensurate state) or if it is
different (incommensurate state). The b... | cond-mat_other |
Improved modeling of Coulomb effects in nanoscale Schottky-barrier FETs: We employ a novel multi-configurational self-consistent Green's function
approach (MCSCG) for the simulation of nanoscale Schottky-barrier field-effect
transistors. This approach allows to calculate the electronic transport with a
seamless transit... | cond-mat_other |
Ohmic and non-Ohmic Andreev transport through an interface between
superconductor and hopping insulator: Dramatic role of barrier properties: At low temperatures and voltages tunneling transport through an interface
between a superconductor and hopping insulator is dominated by coherent
two-electron tunneling between... | cond-mat_other |
Chiral Symmetry and Electron Spin Relaxation of Lithium Donors in
Silicon: We report theoretical and experimental studies of the longitudinal electron
spin and orbital relaxation time of interstitial Li donors in $^{28}$Si. We
predict that despite the near-degeneracy of the ground-state manifold the spin
relaxation t... | cond-mat_other |
Magnetic Phase Transition in FeRh: Density functional calculations are performed to investigate the phase
transition in FeRh alloy. The effective exchange coupling, the critical
temperature of magnetic phase transition and the adiabatic spin wave spectrum
have been obtained. Different contributions to the free energy o... | cond-mat_other |
Self-Adaptive Spike-Time-Dependent Plasticity of Metal-Oxide Memristors: Metal-oxide memristors have emerged as promising candidates for hardware
implementation of artificial synapses - the key components of high-performance,
analog neuromorphic networks - due to their excellent scaling prospects. Since
some advanced c... | cond-mat_other |
Fröhlich Polarons. Lecture course including detailed theoretical
derivations -- 10th edition: In the present course, an overview is presented of the fundamentals of
continuum-polaron physics, which provide the basis of the analysis of polaron
effects in ionic crystals and polar semiconductors. These Lecture Notes dea... | cond-mat_other |
Self-sustained Levitation of Dust Aggregate Ensembles by Temperature
Gradient Induced Overpressures: In laboratory experiments we observe dust aggregates from 100 \mu m to 1 cm
in size composed of micrometer sized grains levitating over a hot surface.
Depending on the dust sample aggregates start to levitate at a tem... | cond-mat_other |
Nonlinear tunneling of BEC in an optical lattice: signatures of quantum
collapse and revival: Quantum theory of the intraband resonant tunneling of a Bose-Einstein
condensate loaded in a twodimensional optical lattice is considered. It is
shown that the phenomena of quantum collapse and revival can be observed in the... | cond-mat_other |
Dynamic Tsallis entropy for simple model systems: In this paper we consider the dynamic Tsallis entropy and employ it for four
model systems: (i) the motion of Brownian oscillator, (ii) the motion of
Brownian oscillator with noise, (iii) the fluctuation of particle density in
hydrodynamics limit as well as in (iv) idea... | cond-mat_other |
Edge Transport in 2D Cold Atom Optical Lattices: We theoretically study the observable response of edge currents in two
dimensional cold atom optical lattices. As an example we use Gutzwiller
mean-field theory to relate persistent edge currents surrounding a Mott
insulator in a slowly rotating trapped Bose-Hubbard syst... | cond-mat_other |
Momentum transfer to small particles by aloof electron beams: The force exerted on nanoparticles and atomic clusters by fast passing
electrons like those employed in transmission electron microscopes are
calculated and integrated over time to yield the momentum transferred from the
electrons to the particles. Numerical... | cond-mat_other |
A Model to Study Finite-Size and Magnetic Effects on the Phase
Transition of a Fermion Interacting System: We present a model to study effects from an external magnetic field, chemical
potential, and finite size, on the phase structure of a massive four- and
six-fermion interacting system. These effects are introduce... | cond-mat_other |
Coherent optical control of spin-spin interaction in doped
semiconductors: We provide a theory of laser-induced interaction between spins localized by
impurity centers in a semiconductor host. By solving exactly the problem of two
localized spins interacting with one itinerant exciton, an analytical
expression for th... | cond-mat_other |
Predicted mobility edges in one-dimensional incommensurate optical
lattices: An exactly solvable model of Anderson localization: Localization properties of non-interacting quantum particles in
one-dimensional incommensurate lattices are investigated with an exponential
short-range hopping that is beyond the minimal n... | cond-mat_other |
Phase diagram of a cold polarized Fermi gas: We propose a phase diagram for a cold polarized atomic Fermi gas with
zero-range interaction. We identify four main phases in the plane of density
and polarization: the superfluid phase, the normal phase, the gapless
superfluid phase, and the modulated phase. We argue that t... | cond-mat_other |
The atomic Bose gas in Flatland: We describe a recent experiment performed with rubidium atoms ($^{87}$Rb),
aiming at studying the coherence properties of a two-dimensional gas of bosonic
particles at low temperature. We have observed in particular a
Berezinskii--Kosterlitz--Thouless (BKT) type crossover in the system,... | cond-mat_other |
Quadrupole Excitations in hysteresis loops of magnetic NanoCluster
$Fe_8$: Experiments show several steps in hysteresis loops of high spin nanocluster
$Fe_8$. It is thought that these steps are due to thermally assisted resonant
tunneling between different quanta spin states. Up to now, in calculatiing it,
only dipol... | cond-mat_other |
Logic Gates with Bright Dissipative Polariton Solitons in Bragg-Cavity
Systems: Optical solitons are an ideal platform for the implementation of
communication lines, since they can be packed extremely close one to another
without risking partial loss of the encoded information due to their
interaction. On the other h... | cond-mat_other |
Scaling and Universality of the Complexity of Analog Computation: We apply a probabilistic approach to study the computational complexity of
analog computers which solve linear programming problems. We analyze
numerically various ensembles of linear programming problems and obtain, for
each of these ensembles, the prob... | cond-mat_other |
Probing Fermionic Condensates by Fast-Sweep Projection onto Feshbach
Molecules: Fast sweep projection onto Feshbach molecules has been widely used as a probe
of fermionic condensates. By determining the exact dynamics of a pair of atoms
in time varying magnetic fields, we calculate the number of condensed and
noncond... | cond-mat_other |
Investigating interaction-induced chaos using time-dependent density
functional theory: Systems whose underlying classical dynamics are chaotic exhibit signatures of
the chaos in their quantum mechanics. We investigate the possibility of using
time-dependent density functional theory (TDDFT) to study the case when ch... | cond-mat_other |
Acoustic attenuation rate in the Fermi-Bose model with a finite-range
fermion-fermion interaction: We study the acoustic attenuation rate in the Fermi-Bose model describing a
mixtures of bosonic and fermionic atom gases. We demonstrate the dramatic
change of the acoustic attenuation rate as the fermionic component is... | cond-mat_other |
Saltation transport on Mars: We present the first calculation of saltation transport and dune formation on
Mars and compare it to real dunes. We find that the rate at which grains are
entrained into saltation on Mars is one order of magnitude higher than on
Earth. With this fundamental novel ingredient, we reproduce th... | cond-mat_other |
Collective Excitations of Harmonically Trapped Ideal Gases: We theoretically study the collective excitations of an ideal gas confined in
an isotropic harmonic trap. We give an exact solution to the Boltzmann-Vlasov
equation; as expected for a single-component system, the associated mode
frequencies are integer multipl... | cond-mat_other |
Time resolved scattering relaxation mechanisms of microcavity polaritons: We study the polariton relaxation dynamics for different scattering
mechanisms as: Phonon and electron scattering procesess. The relaxation
polariton is obtained at very short times by solving the Boltzman equation.
Instead of the well-known rela... | cond-mat_other |
Soliton response to transient trap variations: The response of bright and dark solitons to rapid variations in an expulsive
longitudinal trap is investigated. We concentrate on the effect of transient
changes in the trap frequency in the form of temporal delta kicks and the
hyperbolic cotangent functions. Exact express... | cond-mat_other |
An extended formalism for preferential attachment in heterogeneous
complex networks: In this paper we present a framework for the extension of the preferential
attachment (PA) model to heterogeneous complex networks. We define a class of
heterogeneous PA models, where node properties are described by fixed states in
... | cond-mat_other |
Momentum distribution and condensate fraction of a Fermi gas in the
BCS-BEC crossover: By using the diffusion Monte Carlo method we calculate the one- and two-body
density matrix of an interacting Fermi gas at T=0 in the BCS-BEC crossover.
Results for the momentum distribution of the atoms, as obtained from the
Fouri... | cond-mat_other |
Interplay of Rotational, Relaxational, and Shear Dynamics in Solid 4He: Using a high-sensitivity torsional oscillator technique, we mapped the
rotational and relaxational dynamics of solid helium-4 throughout the parameter
range of the proposed supersolidity. We found evidence that the same
microscopic excitations cont... | cond-mat_other |
Optimization by Quantum Annealing: Lessons from Simple Cases: This paper investigates the basic behavior and performance of simulated
quantum annealing (QA) in comparison with classical annealing (CA). Three
simple one dimensional case study systems are considered, namely a parabolic
well, a double well, and a curved w... | cond-mat_other |
Casimir interaction at liquid nitrogen temperature: Comparison between
experiment and theory: We have measured the normalized gradient of the Casimir force between
Au-coated surfaces of the sphere and the plate and equivalent Casimir pressure
between two parallel Au plates at T=77K. These measurements have been perfo... | cond-mat_other |
Density hardening plasticity and mechanical aging of silica glass under
pressure: A Raman spectroscopic study: In addition of a flow, plastic deformation of structural glasses (in
particular amorphous silica) is characterized by a permanent densification.
Raman spectroscopic estimators are shown to give a full accoun... | cond-mat_other |
Matter-wave solitons in radially periodic potentials: We investigate two-dimensional (2D) states of Bose-Einstein condensates (BEC)
with self-attraction or self-repulsion, trapped in an axially symmetric
optical-lattice potential periodic along the radius. Unlike previously studied
2D models with Bessel lattices, no lo... | cond-mat_other |
Dynamical Instabilities in a two-component Bose condensate in a 1d
optical lattice: In this paper we carry out a stability analysis of the Bloch states of a
two-component Bose-Einstein condensate confined to a 1d optical lattice. We
consider two concrete systems: a mixture of two hyperfine states of Rubidium-87
and a... | cond-mat_other |
Inverse Statistics in the Foreign Exchange Market: We investigate intra-day foreign exchange (FX) time series using the inverse
statistic analysis developed in [1,2]. Specifically, we study the time-averaged
distributions of waiting times needed to obtain a certain increase (decrease)
$\rho$ in the price of an investme... | cond-mat_other |
Coherent spin mixing dynamics in a spin-1 atomic condensate: We study the coherent off-equilibrium spin mixing inside an atomic
condensate. Using mean field theory and adopting the single spatial mode
approximation (SMA), the condensate spin dynamics is found to be well described
by that of a nonrigid pendulum, and dis... | cond-mat_other |
Green's function of a dressed particle: We present a new, highly efficient yet accurate approximation for the Green's
functions of dressed particles, using the Holstein polaron as an example.
Instead of summing a subclass of diagrams (e.g. the non-crossed ones, in the
self-consistent Born approximation (SCBA)), we sum ... | cond-mat_other |
SPT phases for mixed states in one dimension: This study explores the specific structure of 1D SPT phases with $G\times H$
symmetry ($G, H$ are finite non-Abelian groups) and constructs an order
parameter. We demonstrate that this order parameter can comprehensively
describe this specific structure. Utilizing this orde... | cond-mat_other |
Dynamical mean-field equations for strongly interacting fermionic atoms
in a potential trap: We derive a set of dynamical mean-field equations for strongly interacting
fermionic atoms in a potential trap across a Feshbach resonance. Our derivation
is based on a variational ansatz, which generalizes the crossover wave... | cond-mat_other |
Observation of Self-binding in Monolayer $^3$He: We report clear experimental signatures of the theoretically unexpected
gas-liquid transition in the first three monolayers of $^3$He adsorbed on
graphite. The transition is inferred from the linear density dependence of the
$\gamma$-coefficient of the heat capacity meas... | cond-mat_other |
Improved modeling of Coulomb effects in nanoscale Schottky-barrier FETs: We employ a novel multi-configurational self-consistent Green's function
approach (MCSCG) for the simulation of nanoscale Schottky-barrier field-effect
transistors. This approach allows to calculate the electronic transport with a
seamless transit... | cond-mat_other |
Production of a degenerate Fermi gas of metastable helium-3 atoms: We give an overview of the experiments at the Laser Centre of the Vrije
Universiteit in Amsterdam on ultracold gases of metastable helium-4 and
helium-3 as well as mixtures of both isotopes. We describe our experimental
setup and discuss our experiments... | cond-mat_other |
Long-range donor-acceptor electron transport mediated by alpha-helices: We study the long-range electron and energy transfer mediated by a polaron on
an $\alpha$-helix polypeptide chain coupled to donor and acceptor molecules at
opposite ends of the chain. We show that for specific parameters of the system,
an electron... | cond-mat_other |
Average search time bound in cue based search strategy: In this work we consider the problem of searches that utilises past
information gathered during searching, to evaluate the probability distribution
of finding the source at each step. We start with a sample strategy where the
movement at each step is in the immedi... | cond-mat_other |
Universality in edge-source diffusion dynamics: We show that in edge-source diffusion dynamics the integrated concentration
N(t) has a universal dependence with a characteristic time-scale tau=(A/P)^2
pi/(4D), where D is the diffusion constant while A and P are the
cross-sectional area and perimeter of the domain, resp... | cond-mat_other |
Driven optical lattices as strong-field simulators: We argue that ultracold atoms in strongly shaken optical lattices can be
subjected to conditions similar to those experienced by electrons in
laser-irradiated crystalline solids, but without introducing secondary
polarization effects. As a consequence one can induce n... | cond-mat_other |
Infinite average lifetime of an unstable bright state in the green
fluorescent protein: The time evolution of the fluorescence intensity emitted by well-defined
ensembles of Green Fluorescent Proteins has been studied by using a standard
confocal microscope. In contrast with previous results obtained in single
molecu... | cond-mat_other |
Finite size Berezinski-Kosterlitz-Thouless transition at grain
boundaries in solid $^4$He and role of $^3$He impurities: We analyze the complex phenomenology of the Non-Classical Rotational Inertia
(NCRI) observed at low temperature in solid $^4$He within the context of a two
dimensional Berezinski-Kosterlitz-Thoules... | cond-mat_other |
Breathing mode for systems of interacting particles: We study the breathing mode in systems of trapped interacting particles. Our
approach, based on a dynamical ansatz in the first equation of the
Bogolyubov-Born-Green-Kirkwood-Yvon (BBGKY) hierarchy allows us to tackle at
once a wide range of power law interactions an... | cond-mat_other |
Ion-Size Effect at the Surface of a Silica Hydrosol: The author used synchrotron x-ray reflectivity to study the ion-size effect
for alkali ions (Na$^+$, K$^+$, Rb$^+$, and Cs$^+$), with densities as high as
$4 \times 10^{18}- 7 \times 10^{18}$ m$^{-2}$, suspended above the surface of a
colloidal solution of silica nan... | cond-mat_other |
Giant viscosity enhancement in a spin-polarized Fermi liquid: The viscosity is measured for a Fermi liquid, a dilute $^3$He-$^4$He mixture,
under extremely high magnetic field/temperature conditions ($B \leq 14.8$ T, $T
\geq 1.5$ mK). The spin splitting energy $\mu B$ is substantially greater than
the Fermi energy $k_B... | cond-mat_other |
High frequency dynamics modulated by collective magnetization reversal
in artificial spin ice: Spin-torque ferromagnetic resonance (ST-FMR) arises in heavy
metal/ferromagnet heterostructures when an alternating charge current is passed
through the bilayer stack. The methodology to detect the resonance is based on
the... | cond-mat_other |
Enhanced low energy fusion rate in palladium (Pd) due to vibrational
deuteron dipole-dipole interactions and associated resonant tunneling that
over-cancels the Jastrow factor between deuteron pair wavefunctions: We show that interstitial hydrogen nucleii on a metallic lattice are strongly
coupled to their near nei... | cond-mat_other |
Band structure and optical properties of opal photonic crystals: A theoretical approach for the interpretation of reflectance spectra of opal
photonic crystals with fcc structure and (111) surface orientation is
presented. It is based on the calculation of photonic bands and density of
states corresponding to a specifi... | cond-mat_other |
Surface electron band structure and VLEED reflectivity for Al(111): The 2D layer Green function scattering method is used to calculate the energy
of surface states and resonances at Gamma-bar for Al(111) for both below and
above the vacuum level. The surface barrier potential is represented by an
empirical form. The ab... | cond-mat_other |
On the Transition to Turbulence of Oscillatory Flow of Liquid Helium-4: Oscillating solid bodies have frequently been used for studying the
properties of normal and superfluid helium. In particular, the transition from
laminar flow to turbulence has attracted much interest recently. The purpose of
this note is to revie... | cond-mat_other |
Spontaneous Radiation and Amplification of Kelvin Waves on Quantized
Vortices in Bose-Einstein Condensates: We propose a different type of Landau instability in trapped Bose-Einstein
condensates by a helically moving environment. In the presence of quantized
vortices, the instability can cause spontaneous radiation a... | cond-mat_other |
Observation of Spin Wave Soliton Fractals in Magnetic Film Active
Feedback Rings: The manifestation of fractals in soliton dynamics has been observed for the
first time. The experiment utilized self-generated spin wave envelope solitons
in a magnetic film based active feedback ring. At high ring gain, the soliton
tha... | cond-mat_other |
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