Results 51 to 60 of about 31,438 (162)
Bose-Einstein condensation in random directed networks [PDF]
, 2003 We consider the phenomenon of Bose-Einstein condensation in a random growing directed net- work. The network grows by the addition of vertices and edges. At each time step the network gains a vertex with probabilty p and an edge with probability 1 − p.
Rodgers, GJ, Sotolongo-Costa, O
core +2 more sources
Long‐Range Exciton Energy Transfer in Two‐Dimensional Materials
Laser &Photonics Reviews, EarlyView.This review highlights recent advances in long‐range exciton energy transfer within planar 2D‐material architectures. It emphasizes the emergence of self‐hybridized excitonpolaritons, exciton coupling to surface plasmon polaritons and plasmonic lattices, and the role of dipoledipole transfer pathways in enabling efficient nanoscale energy transport ...
Paul H. Bittorf +8 more
wiley +1 more source
Deriving density-matrix functionals for excited states
SciPost Physics, 2023 We initiate the recently proposed $w$-ensemble one-particle reduced density matrix functional theory ($w$-RDMFT) by deriving the first functional approximations and illustrate how excitation energies can be calculated in practice.
Julia Liebert, Christian Schilling
doaj +1 more source
Bose-Einstein condensation of magnons under incoherent pumping
, 2008 Bose-Einstein condensation in a gas of magnons pumped by an incoherent pumping source is experimentally studied at room temperature. We demonstrate that the condensation can be achieved in a gas of bosons under conditions of incoherent pumping. Moreover,
A. Einstein +15 more
core +1 more source
BCS-BEC crossover in a relativistic superfluid and its significance to quark matter [PDF]
, 2005 The character change of a superfluid state due to the variation of the attractive force is investigated in the relativistic framework with a massive fermion. Two crossovers are found.
A. J. Leggett +3 more
core +1 more source
Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics
Laser &Photonics Reviews, EarlyView.The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi +5 more
wiley +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 +2 more
doaj +1 more source
Electromagnetic quantum shifts in relativistic Bose-Einstein condensation
Physics Letters B, 2021 We compute deviations from ideal gas behavior of the pressure, density, and Bose-Einstein condensation temperature of a relativistic gas of charged scalar bosons caused by the current-current interaction induced by electromagnetic quantum fluctuations ...
D.M. Reis, C.A.A. de Carvalho
doaj +1 more source
Bose-Einstein condensation in inhomogeneous Josephson arrays
, 2000 We show that spatial Bose-Einstein condensation of non-interacting bosons occurs in dimension d < 2 over discrete structures with inhomogeneous topology and with no need of external confining potentials.
A Vezzani +11 more
core +1 more source
Bechgaard Salt‐Like Polymers and Their Applications in Organic Electronics
Macromolecular Rapid Communications, EarlyView.The report presents a flexible conducting polymer micro‐wire grown from the vapor phase via an oxidative polymerization route. Electrical measurements show that the produced micro‐wires have relatively high conductivity and non‐linear electrical characteristics.
Bartlomiej Kolodziejczyk
wiley +1 more source