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The measurements of the cosmic microwave background (CMB) have played a significant role in understanding the nature of dark energy. In this article, we investigate the dynamics of the dark energy equation of state, utilizing high-precision…

宇宙学与河外天体物理 · 物理学 2024-07-23 Mahdi Najafi , Supriya Pan , Eleonora Di Valentino , Javad T. Firouzjaee

Classical molecular-dynamics simulations (CMDS) have been conducted to investigate the non-Maxwellian behavior of a weakly coupled plasma submitted to the inverse bremsstrahlung heating of laser irradiation. It is the so called Langdon…

等离子体物理 · 物理学 2024-10-08 Ronan Devriendt , Olivier Poujade

This paper investigates the polytropic matter shell collapse in the non-commutative Reissner-Nordstr$\ddot{o}$m geometry. Using the Israel criteria, equation of motion for the polytropic matter shell is derived. In order to explore the…

广义相对论与量子宇宙学 · 物理学 2015-06-04 M. Sharif , G. Abbas

Accurate prediction of damage and fracture evolution is critical for the safety design and preventive maintenance of engineering structures, however existing computational methods face significant limitations. On one hand, discrete damage…

计算物理 · 物理学 2025-07-01 Roshan Philip Saji , Panos Pantidis , Mostafa E. Mobasher

The nonlinear dynamics of two co-propagating electrostatic wavepackets, characterized by different wavenumbers and amplitudes, in a 1D non-magnetized plasma fluid model is considered, from first principles. The original plasma model,…

等离子体物理 · 物理学 2024-03-27 N. Lazarides , Ioannis Kourakis

We investigate the virialization of cosmic structures in the framework of flat FLRW cosmological models, in which the vacuum energy density evolves with time. In particular, our analysis focuses on the study of spherical matter…

宇宙学与河外天体物理 · 物理学 2014-11-21 S. Basilakos , M. Plionis , J. Sola

A simple and natural introduction to the concept and formalism of spontaneous wave function collapse can and should be based on textbook knowledge of standard quantum state collapse and monitoring. This approach explains the origin of noise…

量子物理 · 物理学 2018-05-25 Lajos Diósi

We present the nonlinear growth of bound cosmological structures using the spherical collapse approach in the shift-symmetric Galileon theories. In particular, we focus on the class of models belonging to the Kinetic Gravity Braiding by…

宇宙学与河外天体物理 · 物理学 2024-01-09 Inês S. Albuquerque , Noemi Frusciante , Francesco Pace , Carlo Schimd

We discuss spatial dynamics and collapse scenarios of localized waves governed by the nonlinear Schr\"{o}dinger equation with nonlocal nonlinearity. Firstly, we prove that for arbitrary nonsingular attractive nonlocal nonlinear interaction…

斑图形成与孤子 · 物理学 2011-07-11 F. Maucher , W. Krolikowski , S. Skupin

We propose a new mechanism for the formation of dark matter clumps in the radiation era. We assume that a light scalar field is decoupled from matter and oscillates harmonically around its vacuum expectation value. We include…

宇宙学与河外天体物理 · 物理学 2020-11-13 Philippe Brax , Jose A. R. Cembranos , Patrick Valageas

Accurate computations of spectral distortions of the cosmic microwave background (CMB) are required for constraining energy release scenarios at redshifts $z\gtrsim 10^3$. The existing literature focuses on distortions that are small…

宇宙学与河外天体物理 · 物理学 2022-08-17 Sandeep Kumar Acharya , Jens Chluba

Two fundamental, and unsolved problems in physics are: i) the resolution of the "measurement problem" in quantum mechanics ii) the quantization of strongly nonlinear (nonabelian) gauge theories. The aim of this paper is to suggest that…

量子物理 · 物理学 2014-11-20 Johan Hansson

The correct accounting for thermal effects is always a challenge when one needs to make quantitative predictions for any laser applications. In such complicated devices as quantum cascade lasers temperature strongly affects the operational…

The assumption that wave function collapse is induced by correlating interactions of the kind that constitute measurements leads to a stochastic collapse equation that does not require the introduction of any new physical constants and that…

量子物理 · 物理学 2022-01-14 Edward J. Gillis

We study the spherical collapse model in the presence of external gravitational tidal shear fields for different dark energy scenarios and investigate the impact on the mass function and cluster number counts. While previous studies of the…

宇宙学与河外天体物理 · 物理学 2016-12-12 Robert Reischke , Francesco Pace , Sven Meyer , Björn Malte Schäfer

We propose a modified dynamics of quantum mechanics, in which classical mechanics of a point mass derives intrinsically in a massive limit of a single-particle model. On the premise that a position basis plays a special role in wavefunction…

量子物理 · 物理学 2009-11-10 Takuya Okabe

The trajectories of the pilot-wave formulation of quantum mechanics and hence its empirical predictions may be recovered via the dynamics of a density function on the configuration space of a system, without reference to a physical wave…

量子物理 · 物理学 2023-04-20 Philipp Roser , Matthew T. Scoggins

It is well-known that quantum mechanics admits two distinct evolutions: the unitary evolution, which is deterministic and well described by the Schr\"{o}dinger equation, and the collapse of the wave function, which is probablistic,…

量子物理 · 物理学 2026-04-07 Le Hu , Andrew N. Jordan

We propose an effective non-relativistic framework in which wave-function collapse emerges as a deterministic dynamical instability induced by gravitational self-interaction and regulated by short-distance repulsion. The dynamics is…

量子物理 · 物理学 2026-04-20 C. A. S. Almeida

A completely Lorentz-invariant Bohmian model has been proposed recently for the case of a system of non-interacting spinless particles, obeying Klein-Gordon equations. It is based on a multi-temporal formalism and on the idea of treating…

量子物理 · 物理学 2014-11-21 Sergio Hernandez-Zapata , Ernesto Hernandez-Zapata