Results 71 to 80 of about 38,380 (146)

Monolayer J‐Aggregate Crystals Strong Coupling with an All‐Dielectric Metasurface for Photonic Properties Modification

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, Jingwen Ma, Fuhuan Shen, Xiaokun Guo, Zefeng Chen, Jianbin Xu   +5 more
wiley   +1 more source

Dynamics of cosmological phase crossover during Bose–Einstein condensation of dark matter in Tsallis cosmology

European Physical Journal C: Particles and Fields
During the cosmic evolution process, as the temperature of a cosmological boson gas falls below a certain threshold, a Bose–Einstein condensation process can occur at various points throughout the cosmic history of the Universe.
Subhra Mondal, Amitava Choudhuri
doaj   +1 more source

Critical slowdown of non-equilibrium polaron dynamics

New Journal of Physics, 2019
We study the quantum dynamics of a single impurity following its sudden immersion into a Bose–Einstein condensate. The ensuing formation of the Bose polaron in this general setting can be seen as impurity decoherence driven by the condensate, which we ...
K Knakkergaard Nielsen, L A Peña Ardila, G M Bruun, T Pohl   +3 more
doaj   +1 more source

Soliton diffusion in a Bose-Einstein condensate: A signature of the analogue Hawking radiation

Physics Letters B, 2019
The analog Hawking radiation (HR) emanating from a sonic black hole horizon formed in a cigar-shaped Bose-Einstein condensate (BEC) at finite temperature is investigated. In particular, we study the effect of HR on a dark (topological) soliton.
Chao Hang, Gregory Gabadadze, Guoxiang Huang   +2 more
doaj   +1 more source

Bose-Einstein condensation of excitons in Cu$_2$O

, 2002
We present a parameter-free model which estimates the density of excitons in Cu$_2$O, related to experiments that have tried to create an excitonic Bose-Einstein condensate.
D.P. Trauernicht, D.W. Snoke, D.W. Snoke, D.W. Snoke, D.W. Snoke, D.W. Snoke, F. Dalfovo, F.I. Kreingol’d, G. M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, J.C. Kim, J.L. Lin, J.M. Kosterlitz, J.S. Weiner, K. Johnsen, K.E. O’Hara, L.V. Butov   +19 more
core   +1 more source

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, Saurav Raj, Mattia Russo, Gianluca Serra, Hao Zhao, Giacomo Bassi, Andrea Lucotti, Francesco Scotognella, Giulio Cerullo, Guglielmo Lanzani, Matteo Tommasini, Margherita Maiuri, Akimitsu Narita, Giuseppe Maria Paternò   +13 more
wiley   +1 more source

Hidden vortices in a Bose-Einstein condensate in a rotating double-well potential

, 2010
We study vortex formation in a Bose-Einstein condensate in a rotating double-well potential. Besides the ordinary quantized vortices and elusive ghost vortices, "hidden" vortices are found distributing along the central barrier. These hidden vortices are
A. Barone, Biao Wu, Hongwei Xiong, Linghua Wen, R. P. Feynman   +4 more
core   +1 more source

Standing waves of Schrödinger equation with constant magnetic field and combined power nonlinearities

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
wiley   +1 more source

Remarks on the Blow-Up Solutions for the Critical Gross-Pitaevskii Equation

Abstract and Applied Analysis, 2013
This paper is concerned with the blow-up solutions of the critical Gross-Pitaevskii equation, which models the Bose-Einstein condensate. The existence and qualitative properties of the minimal blow-up solutions are obtained.
Xiaoguang Li, Chong Lai
doaj   +1 more source

Strongly Coupled Exciton–Hyperbolic‐Phonon‐Polariton Hybridized States in hBN‐Encapsulated Biased Bilayer Graphene

Advanced Optical Materials, Volume 13, Issue 35, December 12, 2025.
Excitons in biased bilayer graphene are electrically tunable excitations in the mid‐infrared (MIR) spectrum, where optical transitions are typically scarce. In this work, it is demonstrated that when the bilayer is encapsulated in hexagonal‐boron‐nitride (hBN)—a material supporting optical phonons and hyperbolic‐phonon‐polaritons (HPhPs) in the MIR—the
Tomer Eini, N. M. R. Peres, Yarden Mazor, Itai Epstein   +3 more
wiley   +1 more source