Results 1 to 10 of about 48,052 (261)
Self similar collapse and the Raychaudhuri equation [PDF]
European Physical Journal C: Particles and Fields, 2019 The role of the Raychaudhuri equation in studying gravitational collapse is discussed. A self-similar distribution of a scalar field along with an imperfect fluid in a conformally flat spacetime is considered for the purpose.
Shibendu Gupta Choudhury +3 more
doaj +3 more sources
Schrödinger–Newton Equation with Spontaneous Wave Function Collapse
Quantum Reports, 2022 Based on the assumption that the standard Schrödinger equation becomes gravitationally modified for massive macroscopic objects, two independent proposals have survived from the 1980s.
Lajos Diósi
doaj +3 more sources
Gravitational collapse via Wheeler–DeWitt equation
Annals of Physics14 pages, 2 ...
Marek Nowakowski, Davide Batic
exaly +3 more sources
A Riccati equation in radiative stellar collapse [PDF]
Journal of Mathematical Physics, 2008 We model the behavior of a relativistic spherically symmetric shearing fluid undergoing gravitational collapse with heat flux. It is demonstrated that the governing equation for the gravitational behavior is a Riccati equation. We show that the Riccati equation admits two classes of new solutions in closed form. We regain particular models, obtained in
Sunil Maharaj, Maharaj S D
exaly +4 more sources
Collapse for the higher-order nonlinear Schrödinger equation [PDF]
Physica D: Nonlinear Phenomena, 2016 We examine conditions for finite-time collapse of the solutions of the higher-order nonlinear Schrödinger (NLS) equation incorporating third-order dispersion, self-steepening, linear and nonlinear gain and loss, and Raman scattering; this is a system that appears in many physical contexts as a more realistic generalization of the integrable NLS.
V Achilleos +2 more
exaly +5 more sources
Non-Markovian wave-function collapse models are Bohmian-like theories in disguise [PDF]
Quantum, 2021 Spontaneous collapse models and Bohmian mechanics are two different solutions to the measurement problem plaguing orthodox quantum mechanics. They have, a priori nothing in common.
Antoine Tilloy, Howard M. Wiseman
doaj +1 more source
Equation of State Effects in Core-Collapse Supernovae [PDF]
Physical Review Letters, 2020 We investigate the impact of different properties of the nuclear equation of state in core-collapse supernovae, with a focus on the proto-neutron-star contraction and its impact on the shock evolution. To this end, we introduce a range of equations of state that vary the nucleon effective mass, incompressibility, symmetry energy, and nuclear saturation
Yasin, H. +3 more
openaire +4 more sources
Micromachines, 2021 Analytical modeling of capacitive micromachined ultrasonic transducer (CMUT) is one of the commonly used modeling methods and has the advantages of intuitive understanding of the physics of CMUTs and convergent when modeling of collapse mode CMUT.
JiuJiang Wang +8 more
doaj +1 more source
Collapse in the nonlocal nonlinear Schrödinger equation [PDF]
Nonlinearity, 2011 We discuss spatial dynamics and collapse scenarios of localized waves governed by the nonlinear Schrödinger equation with nonlocal nonlinearity. Firstly, we prove that for arbitrary nonsingular attractive nonlocal nonlinear interaction in arbitrary dimension collapse does not occur.
Maucher, Fabian +2 more
openaire +5 more sources
Experimental Predictions for Norm-Conserving Spontaneous Collapse
Entropy, 2023 Previous work has shown that nonlocal collapse in quantum mechanics can be described by a deterministic, non-unitary operator added to the standard Schrödinger equation.
D. W. Snoke, D. N. Maienshein
doaj +1 more source