Quantum phase transition in the Dicke model with critical and non-critical entanglement
, 2012 We study the quantum phase transition of the Dicke model in the classical oscillator limit, where it occurs already for finite spin length. In contrast to the classical spin limit, for which spin-oscillator entanglement diverges at the transition ...
A. Alvermann +7 more
core +1 more source
Recovering Classical Dynamics from Coupled Quantum Systems Through Continuous Measurement [PDF]
, 2003 We study the role of continuous measurement in the quantum to classical transition for a system with coupled internal (spin) and external (motional) degrees of freedom.
Alsing, Paul M. +5 more
core +3 more sources
The Zitterbewegung in the Bivector Standard Model
AxiomsWe show that the Zitterbewegung of the electron arises as a real internal motion when spin is treated as a classical bivector rather than as a point fermion of the Dirac equation.
Bryan Sanctuary
doaj +1 more source
A quantitative study of spin noise spectroscopy in a classical gas of $^{41}$K atoms [PDF]
, 2006 We present a general derivation of the electron spin noise power spectrum in alkali gases as measured by optical Faraday rotation, which applies to both classical gases at high temperatures as well as ultracold quantum gases.
A. Corney +8 more
core +1 more source
Analyses of the transmission of the disorder from a disturbed environment to a spin chain
, 2014 We study spin chains submitted to disturbed kick trains described by classical dynamical processes. The spin chains are described by Heisenberg and Ising models.
Aubourg, Lucile, Viennot, David
core +2 more sources
Discrete breathers in classical spin lattices [PDF]
Physical Review B, 2001 15 pages, 12 ...
Zolotaryuk, Y., Flach, S., Fleurov, V.
openaire +3 more sources
Classical limit of higher-spin string amplitudes
Journal of High Energy Physics, 2023 It has been shown that a special set of three-point amplitudes between two massive spinning states and a graviton reproduces the linearised stress-energy tensor for a Kerr black hole in the classical limit. In this work we revisit this result and compare
Lucile Cangemi, Paolo Pichini
doaj +1 more source
Computer Simulation of Quantum Dynamics in a Classical Spin Environment
, 2014 In this paper a formalism for studying the dynamics of quantum systems coupled to classical spin environments is reviewed. The theory is based on generalized antisymmetric brackets and naturally predicts open-path off-diagonal geometric phases in the ...
Sergi, Alessandro
core +1 more source
Spin liquid phase due to competing classical orders in the semiclassical theory of the Heisenberg model with ring exchange on an anisotropic triangular lattice [PDF]
, 2013 Linear spin wave theory shows that ring exchange induces a quantum disordered region in the phase diagram of the title model. Spin wave spectra show that this is a direct manifestation of competing classical orders.
Holt, Michael +2 more
core +3 more sources
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source