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A multi-channel algebraic scattering theory, to find solutions of coupled-channel scattering problems with interactions determined by collective models, has been structured to ensure that the Pauli principle is not violated. By tracking the…

Nuclear Theory · Physics 2009-11-10 L. Canton , G. Pisent , J. P. Svenne , D. van der Knijff , K. Amos , S. Karataglidis

This is a study of $q$-Fermions arising from a q-deformed algebra of harmonic oscillators. Two distinct algebras will be investigated. Employing the first algebra, the Fock states are constructed for the generalized Fermions obeying Pauli…

Quantum Physics · Physics 2015-06-26 P. Narayana Swamy

The shell structures for weakly interacting fermions in harmonic oscillator traps at zero temperature undergo several transitions depending on the number of particles in the trap and their interaction strength. Calculations of the one and…

Condensed Matter · Physics 2011-07-19 Henning Heiselberg , Ben Mottelson

We consider a bilayer setup with two parallel planes of cold fermionic polar molecules when the dipole moments are oriented perpendicular to the planes. The binding energy of two-body states with one polar molecule in each layer is…

Quantum Gases · Physics 2015-03-19 N. T. Zinner , J. R. Armstrong , A. G. Volosniev , D. V. Fedorov , A. S. Jensen

In this study, we conducted a detailed investigation into the time evolution of the probability density within a 1D double-well potential hosting a Bose-Fermi mixture. This system comprised spinless bosons and spin one-half fermions with…

Quantum Gases · Physics 2023-11-07 Avella Richard , Grajales Diana , Rubio Juan Pablo

Motivated by several experimental efforts to understand spin diffusion and transport in ultracold fermionic gases, we study the spin dynamics of initially spin-polarized ensembles of harmonically trapped non-interacting spin-1/2 fermionic…

Quantum Gases · Physics 2015-09-16 Andrew P. Koller , Joshua Mundinger , Michael L. Wall , Ana Maria Rey

We develop a thermodynamical model of fermionic dark matter halos at finite temperature. Statistical equilibrium states may be justified by a process of violent collisionless relaxation in the sense of Lynden-Bell or from a collisional…

General Relativity and Quantum Cosmology · Physics 2022-09-07 Pierre-Henri Chavanis

Recently, the statistical effect of fermionic superradiance is approved by series of experiments both in free space and in a cavity. The Pauli blocking effect can be visualized by a 1/2 scaling of Dicke transition critical pumping strength…

Quantum Gases · Physics 2023-03-03 Shi Chen , Yu Chen

We study the ground states of the pieces' model in the Fermi-Dirac statistics in the thermodynamic limit. In other words, we consider the minimizing configurations of $ n $ interacting fermions in an interval $ \Lambda $ divided into pieces…

Mathematical Physics · Physics 2023-03-29 Vadim Ognov

We discuss examples of two dimensional metallic states with charge fractionalization, and we will demonstrate that the mechanism of charge fractionalization leads to exotic metallic behaviors at low and intermediate temperature. The…

Strongly Correlated Electrons · Physics 2022-03-29 Xiao-Chuan Wu , Yichen Xu , Mengxing Ye , Zhu-Xi Luo , Cenke Xu

Fermions are the building blocks of matter, forming atoms and nuclei, complex materials and neutron stars. Our understanding of many-fermion systems is however limited, as classical computers are often insufficient to handle the intricate…

Quantum Gases · Physics 2022-02-01 Thomas Hartke , Botond Oreg , Ningyuan Jia , Martin Zwierlein

We experimentally study two-dimensional (2D) Coulomb crystals in the "radial-2D" phase of a linear Paul trap. This phase is identified by a 2D ion lattice aligned entirely with the radial plane and is created by imposing a large ratio of…

We show that it is possible to replace the actual implicit distribution function of the fractional exclusion statistics by an explicit one whose form does not change with the parameter $\alpha$. This alternative simpler distribution…

Statistical Mechanics · Physics 2009-11-10 Qiuping A. Wang , A. Le Mehaute , L. Nivanen , M. Pezeril

Fermionic natural occupation numbers do not only obey Pauli's exclusion principle, but are even further restricted by so-called generalized Pauli constraints. Such restrictions are particularly relevant whenever they are saturated by given…

Quantum Gases · Physics 2015-11-03 Christian Schilling

Ultracold neutral bosons in a rapidly rotating atomic trap have been predicted to exhibit fractional quantum Hall-like states. We describe how the composite fermion theory, used in the description of the fractional quantum Hall effect for…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 N. Regnault , C. C. Chang , Th. Jolicoeur , J. K. Jain

The superfluid transition in an ultracold two-component atomic Fermi gas is analyzed in the case where the two components have different densities. We describe a superfluid state which spontaneously breaks the rotational-symmetry by…

Superconductivity · Physics 2007-05-23 Armen Sedrakian , Jordi Mur-Petit , Artur Polls , Herbert Müther

A simple parton cascade model for the ultra-relativistic nucleus-nucleus collisions is proposed to investigate the Pauli blocking at the transition from hadronic to partonic state, i.e. QGP. A boost invariant study of the Pauli blocking is…

Nuclear Theory · Physics 2007-05-23 Ben-Hao Sa , A. Bonasera

The effect of static fluctuations in the phase of the order parameter on the normal and superconducting properties of a 2D system with attractive four-fermion interaction is studied. Analytic expressions for the fermion Green's function,…

Superconductivity · Physics 2009-10-31 Valery P. Gusynin , Vadim M. Loktev , Sergei G. Sharapov

The analogy between the Skyrme and Higgs field leads to the conjecture that all fermions are skyrmions and thus always carry conserved quantum numbers, which are identified with baryon or lepton quantum numbers. This connection between spin…

High Energy Physics - Phenomenology · Physics 2015-06-12 Richard M. Weiner

In this study we prove that the Pauli interaction -- which is associated with a length parameter -- emerges when the minimal coupling recipe is applied to the non-degenerate version of the Dirac Lagrangian. The conventional Dirac Lagrangian…

General Relativity and Quantum Cosmology · Physics 2024-08-12 J. Struckmeier , D. Vasak , A. Redelbach , H. Stöcker