Results 91 to 100 of about 11,172,734 (276)

Gravitational Waves from a Dark Phase Transition. [PDF]

open access: yesPhysical Review Letters, 2015
In this work, we show that a large class of models with a composite dark sector undergo a strong first order phase transition in the early Universe, which could lead to a detectable gravitational wave signal.
P. Schwaller
semanticscholar   +1 more source

Skyrmion crystals: Dynamics and phase transition

open access: yesAIP Advances, 2018
We study a crystal of skyrmions generated on a square lattice using a ferromagnetic exchange interaction and a Dzyaloshinskii-Moriya interaction between nearest-neighbors under an external magnetic field.
H. T. Diep   +2 more
doaj   +1 more source

Cosmological phase transition of spontaneous confinement

open access: yesJournal of High Energy Physics, 2020
The dynamics of a cosmological (de)confinement phase transition is studied in nearly conformally invariant field theories, where confinement is predominantly spontaneously generated and associated with a light “dilaton” field.
Kaustubh Agashe   +4 more
doaj   +1 more source

Numerical simulations of acoustically generated gravitational waves at a first order phase transition [PDF]

open access: yes, 2015
We present details of numerical simulations of the gravitational radiation produced by a first order thermal phase transition in the early universe. We confirm that the dominant source of gravitational waves is sound waves generated by the expanding ...
M. Hindmarsh   +3 more
semanticscholar   +1 more source

Electroweak phase transition in the reduced minimal 3-3-1 model

open access: yes, 2013
The electroweak phase transition is considered in framework of the reduced minimal 3-3-1 model (RM331). Structure of phase transition in this model is divided into two periods.
Long, Hoang Ngoc   +2 more
core   +1 more source

Phase Transitions in Phase Retrieval [PDF]

open access: yes, 2015
Consider a scenario in which an unknown signal is transformed by a known linear operator, and then the pointwise absolute value of the unknown output function is reported. This scenario appears in several applications, and the goal is to recover the unknown signal -- this is called phase retrieval. Phase retrieval has been a popular subject of research
openaire   +3 more sources

Superconducting transition of a two-dimensional Josephson junction array in weak magnetic fields

open access: yes, 2005
The superconducting transition of a two-dimensional (2D) Josephson junction array exposed to weak magnetic fields has been studied experimentally. Resistance measurements reveal a superconducting-resistive phase boundary in serious disagreement with the ...
A. D. Zaikin   +5 more
core   +1 more source

Remarks on the multi-parameter reweighting method for the study of lattice QCD at non-zero temperature and density

open access: yes, 2004
We comment on the reweighting method for the study of finite density lattice QCD. We discuss the applicable parameter range of the reweighting method for models which have more than one simulation parameter.
A. Hart   +39 more
core   +1 more source

Phase transitions in the Universe [PDF]

open access: yesContemporary Physics, 1998
31 pages, LaTeX, 10 figures, 8 provided (7 EPS + 1 PS). Uses psfig.tex. Invited article for ``Contemporary Physics''
openaire   +4 more sources

Quantum phase transition in a three-level atom-molecule system

open access: yes, 2012
We adopt a three-level bosonic model to investigate the quantum phase transition in an ultracold atom-molecule conversion system which includes one atomic mode and two molecular modes. Through thoroughly exploring the properties of energy level structure,
Fu, Li-Bin, Li, Fu-Li, Li, Sheng-Chang
core   +1 more source

Home - About - Disclaimer - Privacy