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Within a second virial theory, we study bulk phase diagrams as well as the free planar isotropic-nematic interface of binary mixtures of nonadditive thin and thick hard rods. For species of the same type the excluded volume is determined…

软凝聚态物质 · 物理学 2009-11-10 K. Shundyak , R. van Roij , P. van der Schoot

We study theoretically the lifetimes of attractive and repulsive Fermi polarons, as well as the molecule at finite momentum in three dimensions. To this end, we develop a new technique that allows for the computation of Green's functions in…

量子气体 · 物理学 2024-11-28 Jonas von Milczewski , Richard Schmidt

The light-harvesting efficiency of a photoactive molecular complex is largely determined by the properties of its electronic quantum states. Those, in turn, are influenced by molecular vibrational states of the nuclear degrees of freedom.…

生物物理 · 物理学 2019-10-23 Hong-Guang Duan , Michael Thorwart , R. J. Dwayne Miller

In the framework of the multiconfiguration Dirac-Hartree-Fock method, we investigate the transition properties of four excited states in the $2p^53s$ configuration of neutral neon. The electron correlation effects are taken into account…

原子物理 · 物理学 2015-06-12 Jiguang Li , Per Jönsson , Michel Godefroid , Gediminas Gaigalas

We develop a Maxwell-Schroedinger formalism in order to describe the radiative interaction mechanism between semiconductor quantum dots. We solve the Maxwell equations for the electromagnetic field coupled to the polarization field of a…

介观与纳米尺度物理 · 物理学 2009-11-10 Gaetano Parascandolo , Vincenzo Savona

We consider a heteronuclear fermionic mixture on the molecular side of an interspecies Feshbach resonance and discuss atom-dimer scattering properties in uniform space and in the presence of an external confining potential, restricting the…

量子气体 · 物理学 2013-05-29 J. Levinsen , T. G. Tiecke , J. T. M. Walraven , D. S. Petrov

The adsorption kinetics of CO on PdAu bimetallic clusters, containing 140 $\pm$ 12 atoms and a composition varying between 0% and 55% of Pd atoms, is investigated by a pulsed molecular beam method (MBRS). The clusters are grown on a…

材料科学 · 物理学 2020-11-03 Georges Sitja , Claude R Henry

Up to second order in alpha, vacuum electro-magnetic corrections to weak interaction induced charged particle lifetimes have been previously studied. In the laboratory, stopped muon lifetimes are measured in a condensed matter medium whose…

高能物理 - 唯象学 · 物理学 2007-05-23 A. Widom , Y. Srivastava , J. Swain

The vibrational dynamics of adsorbate molecules in single-molecule junctions depend critically on the geometric structure and electronic interactions between molecule and substrate. Vibrations, excited mechanochemically or by external…

介观与纳米尺度物理 · 物理学 2025-09-17 Lukas Hörmann , Reinhard J. Maurer

We present a joint experimental and theoretical investigation of the lifetime of weakly bound dimers formed near narrow interspecies Feshbach resonances in mass-imbalanced Fermi-Fermi systems, considering the specific example of a mixture…

量子气体 · 物理学 2017-01-10 Michael Jag , Marko Cetina , Rianne S. Lous , Rudolf Grimm , Jesper Levinsen , Dmitry S. Petrov

The interplay between static and dynamic disorder and collective optical response in molecular ensembles is an important characteristic of nanoplasmonic and nanophotonic molecular systems. Here we investigate the cooperative superradiant…

The radiative decay of excited states of the negative ion of rhodium, Rh$^-$, has been investigated experimentally and theoretically. The experiments were conducted at the Double ElectroStatic Ion Ring Experiment (DESIREE) facility at…

Attosecond noncollinear four wave mixing spectroscopy with one attosecond extreme ultraviolet (XUV) pulse and two few-cycle near-infrared (NIR) pulses was used to measure the autoionization decay lifetimes of inner valence electronic…

We estimate the range of the radiative lifetime and energy of the anomalous, low-energy $3/2^+(7.8 \pm 0.5$ eV) state in the $^{229}$Th nucleus. Our phenomenological calculations are based on the available experimental data for the…

原子物理 · 物理学 2015-12-09 E. V. Tkalya , Christian Schneider , Justin Jeet , Eric R. Hudson

We derive and evaluate expressions for the low temperature {\it dc} equilibrium tunneling conductance between parallel two-dimensional electron systems. Our theory is based on a linear-response formalism and on impurity-averaged…

凝聚态物理 · 物理学 2009-10-22 Lian Zheng , A. H. MacDonald

Quantum transport through single molecules is very sensitive to the strength of the molecule-electrode contact. Here, we investigate the behavior of a model molecular junction weakly coupled to external electrodes in the case where charging…

介观与纳米尺度物理 · 物理学 2009-11-11 Bo Song , Dmitry A. Ryndyk , Gianaurelio Cuniberti

We calculate the potential energy curves, the permanent dipole moment curves, and the lifetimes of the ground and excited vibrational states of the heteronuclear alkali dimers XY (X, Y = Li, Na, K, Rb, Cs) in the X1{\Sigma}+ electronic…

化学物理 · 物理学 2016-10-05 Dmitry A. Fedorov , Andrei Derevianko , Sergey A. Varganov

We report a dramatic magnetic field dependence in the lifetime of trapped, ultracold diatomic molecules created through an s-wave Feshbach resonance in 40K. The molecule lifetime increases from less than 1 ms away from the Feshbach…

凝聚态物理 · 物理学 2009-11-10 C. A. Regal , M. Greiner , D. S. Jin

Magnetic quadrupole and electric octupole transitions from the configurations $4p^54d^{N+1}$ and $4p^64d^{N-1}4f$ were calculated along with magnetic dipole, electric dipole and electric quadrupole radiative transitions in quasirelativistic…

原子物理 · 物理学 2015-04-08 R. Karpuškienė , P. Bogdanovich , R. Kisielius

We present a combined analytical and numerical study of the early stages (sub-100fs) of the non-equilibrium dynamics of photo-excited electrons in graphene. We employ the semiclassical Boltzmann equation with a collision integral that…

介观与纳米尺度物理 · 物理学 2013-08-02 Andrea Tomadin , Daniele Brida , Giulio Cerullo , Andrea C. Ferrari , Marco Polini