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We point out the possibility of having a roton-type excitation spectrum in a quasi-1D Bose-Einstein condensate with dipole-dipole interactions. Normally such a system is quite unstable due to the attractive portion of the dipolar…

Other Condensed Matter · Physics 2007-05-23 Stefano Giovanazzi , Duncan H J O'Dell

The polarized dipolar Fermi gas shows exotic properties at low temperatures, characterized by an axially-deformed Fermi surface and anisotropic single-particle energy, due to the long-range and anisotropic nature of dipole-dipole…

Quantum Gases · Physics 2024-04-24 Eiji Nakano , Takahiko Miyakawa , Hiroyuki Yabu

We study strongly correlated ground and excited states of rotating quasi-2D Fermi gases constituted of a small number of dipole-dipole interacting particles with dipole moments polarized perpendicular to the plane of motion. As the number…

Strongly Correlated Electrons · Physics 2009-11-13 Klaus Osterloh , Nuria Barberán , Maciej Lewenstein

We present the theory for retarded resonance interaction between two identical atoms at arbitrary positions near a metal surface. The dipole-dipole resonance interaction force that binds isotropically excited atom pairs together in free…

Materials Science · Physics 2013-04-10 Mathias Boström , Clas Persson , Barry W. Ninham , Patrick Norman , Bo E. Sernelius

The mobility of O atoms at very low temperatures is not generally taken into account, despite O diffusion would add to a series of processes leading to the observed rich molecular diversity in space. We present a study of the mobility and…

Astrophysics of Galaxies · Physics 2014-02-11 M. Minissale , E. Congiu , F. Dulieu

Properties of the "electron gas" - in which conduction electrons interact by means of Coulomb forces but ionic potentials are neglected - change dramatically depending on the balance between kinetic energy and Coulomb repulsion. The limits…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Amit Ghosal , A. D. Guclu , C. J. Umrigar , Denis Ullmo , Harold U. Baranger

We study the effect of Coulomb repulsion between oxygen holes on the London penetration depth $\lambda$ based on the concept of spin-polaron nature of Fermi quasiparticles in cuprates superconductors. It is shown that for the generally…

Superconductivity · Physics 2020-04-03 K K Komarov , D M Dzebisashvili

We calculate the quantum heat generation, the interaction force and the frictional torque for two rotating spherical nanoparticles with a radius $R$. In contrast to the static case, when there is an upper limit in the radiative heat…

Quantum Physics · Physics 2017-08-09 A. I. Volokitin

We investigate rotational state changes in a single collision of diatomic molecular ions, polar or apolar, with an atomic ion. Rotational state changes may occur since the angular degree of freedom of the molecular ions interacts with the…

Quantum Physics · Physics 2026-04-20 J. Martin Berglund , Michael Drewsen , Christiane P. Koch

We report here an experimental and theoretical study on the magnetoresistance properties of heavily phosphorous doped germanium on the metallic side of the metal-nonmetal transition. An anomalous regime, formed by negative values of the…

In this article we develop the framework to describe Bose-Fermi mixtures of magnetic atoms, focusing on the interaction of bosonic self-bound dipolar quantum droplets with a small number of fermions. We find an attractive interaction…

Quantum Gases · Physics 2018-09-26 Matthias Wenzel , Tilman Pfau , Igor Ferrier-Barbut

We use state- and time-resolved coherent Raman spectroscopy to study the rotational dynamics of oxygen molecules in ultra-high rotational states. While it is possible to reach rotational quantum numbers up to $N \approx 50$ by increasing…

Chemical Physics · Physics 2015-06-19 Alexander A. Milner , Aleksey Korobenko , Valery Milner

We investigate the magnetic dipole coupling between a metallic surface and an atom in a thermal state, ground state and excited hyperine state. This interaction results in a repulsive correction and - unlike the electrical dipole…

Quantum Physics · Physics 2016-05-17 H. Haakh , F. Intravaia , C. Henkel

This study develops a novel experimental method of deducing the profile of interaction induced between impurities in a trapped gas of ultracold Fermi/Bose atoms, which are often referred to as Fermi/Bose polarons. In this method, we…

Quantum Gases · Physics 2021-05-05 Junichi Takahashi , Hiroyuki Tajima , Eiji Nakano , Kei Iida

The long-range electrostatic interactions between molecules depend strongly on their relative orientation, which manifests as a rotational state dependence. Interactions between molecules in the same rotational quantum state are well-known…

Atomic Physics · Physics 2024-05-16 Etienne F. Walraven , Tijs Karman

New stable quarks and charged leptons may exist and be hidden from detection, as they are bound by Coulomb interaction in neutral dark atoms of composite dark matter. This possibility leads to fundamentally new types of indirect effects…

High Energy Astrophysical Phenomena · Physics 2014-12-01 Jean-René Cudell , Maxim Yu. Khlopov , Quentin Wallemacq

The role of impurity radiation in the reduction of heat loads on divertor plates in present experiments such as DIII-D, JET, JT-60, ASDEX, and Alcator C-Mod, and in planned experiments such as ITER and TPX places a new degree of importance…

plasm-ph · Physics 2009-10-28 R. Clark , J. Abdallah , D. Post

We investigate the effect due to background impurities embedded in the region of two-dimensional electron gases to the magnetotransport. These impurities are achieved by homogeneously incorporating Si atoms in single quantum wells of high…

Mesoscale and Nanoscale Physics · Physics 2015-11-26 E. P. Rugeramigabo , L. Bockhorn , R. J. Haug

Rydberg atoms immersed in a Bose-Einstein condensate interact with the quantum gas via electron-atom and ion-atom interaction. To suppress the typically dominant electron-neutral interaction, Rydberg states with principal quantum number up…

Atoms excited into high-lying Rydberg states and under strong dipole-dipole interactions exhibit phenomena associated with highly correlated and complex systems. We perform first principles numerical simulations on the dynamics of such…