Results 91 to 100 of about 307,937 (183)
Simple criterion for the occurrence of Bose-Einstein condensation and the Meissner-Ochsenfeld effect
, 1997 We examine the occurrence of Bose-Einstein condensation in both nonrelativistic and relativistic systems with no self-interactions in a general setting. A simple condition for the occurrence of Bose-Einstein condensation is given.
Kirsten, Klaus, Toms, David J.
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Mathematical Models and Numerical Methods for Bose-Einstein Condensation [PDF]
, 2012 The achievement of Bose-Einstein condensation (BEC) in ultracold vapors of alkali atoms has given enormous impulse to the theoretical and experimental study of dilute atomic gases in condensed quantum states inside magnetic traps and optical lattices ...
W. Bao, Yongyong Cai
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Coordinate‐ and Spacetime‐Independent Quantum Physics
Annalen der Physik, Volume 538, Issue 1, January 2026.This article studies in the framework of quantum field theory in curved spacetime, if there exists a single zero‐rank‐tensor solution of a Klein‐Gordon PDE, being valid at once for the depicted spacetimes. The answer is shown to be affirmative, even for a class of such solutions having the standard applications in particle physics. ABSTRACT The concept
Viacheslav A. Emelyanov, Daniel Robertz
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Particle number fluctuations in a non-ideal pion gas
EPJ Web of Conferences, 2018 We consider a non-ideal hot pion gas with the dynamically fixed number of particles in the model with the λφ4 interaction. The effective Lagrangian for the description of such a system is obtained by dropping the terms responsible for the change of the ...
Kolomeitsev Evgeni E. +2 more
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Laser &Photonics Reviews, Volume 20, Issue 2, 22 January 2026.The monolayer J‐aggregate PTCDI‐C13, grown on thin hBN, is transferred to an all‐dielectric metasurface to achieve strong coupling between optical modes (GMRs and qBICs) and Frenkel excitons. With low losses in both microcavities and excitons, a Rabi splitting of 78 meV is observed in both reflectance and photoluminescence k‐space maps, enabling ...
Xinyi Zhao +5 more
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The Canonical Perfect Bose Gas in Casimir Boxes
, 2004 We study the problem of Bose-Einstein condensation in the perfect Bose gas in the canonical ensemble, in anisotropically dilated rectangular parallelpipeds (Casimir boxes).
Bru J.-B. +12 more
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Time‐Domain Visualization of Electron‐Phonon Coupling in Nanographenes
Small Methods, Volume 10, Issue 2, 22 January 2026.Impulsive vibrational spectroscopy, Raman spectroscopy, and density functional theory calculations are gathered together to unveil elusive low‐frequency collective vibrational modes in dibenzo[hi,st]ovalene nanographenes, enabling the detailed comparison between vibrational modes in derivatives with different peripheral groups.
Rafael Muñoz‐Mármol +13 more
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Condensed Matter Physics, 2010 For a Bose atom system whose energy operator is diagonal in the so-called number operators and its ground state has an internal two-level structure with negative energies, exact expressions for the limit free canonical energy and pressure are obtained ...
M. Corgini, D.P. Sankovich
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Born-Kothari Condensation for Fermions
Entropy, 2017 In the spirit of Bose–Einstein condensation, we present a detailed account of the statistical description of the condensation phenomena for a Fermi–Dirac gas following the works of Born and Kothari.
Arnab Ghosh
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Bulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.Abstract We study standing waves of the Schrödinger equation with constant magnetic field and combined power nonlinearities, which describes a single non‐relativistic quantum particle in the presence of an electromagnetic field. We develop the local minima geometry method to establish the existence, estimates and mass collapse results for this equation,
Zhaosheng Feng, Yu Su
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