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We quantize the Brownian motion undergone by a free particle in the absence of inertial force (the so-called large friction regime) as described by the diffusion equation early found out by Einstein in 1905. Accordingly, we are able to come…

统计力学 · 物理学 2010-04-06 A. O. Bolivar

In Reply to Comment on Dynamically maintained steady-state pressure gradients, Sheehan offered his responses to the fifteen proposed resolutions to Duncan's paradox. This comment on Sheehan's reply aims to point out that it is epicatalysis…

化学物理 · 物理学 2018-12-31 Yingbin Ge

The interest in the concept of entropic forces has risen considerably since E. Verlinde proposed to interpret the force in Newton s second law and Gravity as entropic forces [1]. Brownian motion, the motion of a small particle (pollen)…

综合物理 · 物理学 2015-06-17 Nico Roos

This is the reply to the 2nd version of the comment, [arXiv.1312.5286v2], by McCutcheon {\it et al.} on our paper [PRL 109, 170402 (2012)]. Our letter presents three examples. For the steady-state solution of the first example, i.e., the…

量子物理 · 物理学 2015-03-26 Wei-Min Zhang , Ping-Yuan Lo , Heng-Na Xiong , Matisse Wei-Yuan Tu , Franco Nori

All the laws of physics are time-reversible. Time arrow emerges only when ensembles of classical particles are treated probabilistically, outside of physics laws, and the entropy and the second law of thermodynamics are introduced. In…

量子物理 · 物理学 2021-03-16 Davi Geiger , Zvi M. Kedem

We study the quantization of a model proposed by Newton to explain centripetal force namely, that of a particle moving on a regular polygon. The exact eigenvalues and eigenfunctions are obtained. The quantum mechanics of a particle moving…

量子物理 · 物理学 2010-10-19 Rajat Kumar Pradhan , Sandeep K. Joshi

The cosmological constant problem is principally concerned with trying to understand how the zero-point energy of quantum fields contributes to gravity. Here we take the approach that by addressing a fundamental unresolved issue in quantum…

广义相对论与量子宇宙学 · 物理学 2009-11-30 T. P. Singh

We define a new dynamical variable, the relative existence e, in terms of space and time. Taking it as a generalized positional coordinate, we show that for conservative systems the canonically conjugated momentum is identified as the…

量子物理 · 物理学 2007-05-23 C. G. S. Costa

Quantum mechanics---the theory describing the fundamental workings of nature---is famously counterintuitive: it predicts that a particle can be in two places at the same time, and that two remote particles can be inextricably and…

We develop a formulation of particle mechanics in which the functional relation between force and kinetic energy is derived directly from local conservation mechanical energy $E$, rather than postulated through Newton's second law or a…

经典物理 · 物理学 2026-02-10 Thomas Oikonomou

An experimentally inspired model is constructed and rigorously solved from the Hamiltonian level where a dc circular spontaneous flow exists in absence of a magnetic field, irrespective of presence of dissipation causing otherwise proper…

等离子体物理 · 物理学 2007-05-23 V. Capek , J. Bok

We propose a complete proof of the Born rule using an additional postulate stating that for a short enough time {\Delta}t between two measurements, a property of a particle will keep its values fixed. This dynamical postulate allows us to…

量子物理 · 物理学 2023-08-22 Yakir Aharonov , Tomer Shushi

Here, we develop a comprehensive quantum theory for the phenomenon of quantum friction. Based on a theory of macroscopic quantum electrodynamics for unstable systems, we calculate the quantum expectation of the friction force, and link the…

量子物理 · 物理学 2015-06-16 Mario G. Silveirinha

The interaction between two parts in a compound quantum system may be reconsidered more completely than before and some new understandings and conclusions different from current quantum mechanics are obtained, including the conservation law…

综合物理 · 物理学 2010-11-03 Tian-Hai Zeng

The Brownian motion of a test particle interacting with a quantum scalar field in the presence of a perfectly reflecting boundary is studied in (1 + 1)-dimensional flat spacetime. Particularly, the expressions for dispersions in velocity…

量子物理 · 物理学 2014-09-02 V. A. De Lorenci , E. S. Moreira , M. M. Silva

This article summarizes our recent efforts to understand spontaneous quantum vacuum forces and torques, which require that a stationary object be out of thermal equilibrium with the blackbody background radiation. We proceed by a systematic…

量子物理 · 物理学 2024-11-22 Kimball A. Milton , Nima Pourtolami , Gerard Kennedy

We discuss contributions to the thermopower in an electron fluid. A simple argument based on Newton's second law with the pressure gradient as the force suggests that the thermopower is given by a thermodynamic derivative, viz., the entropy…

统计力学 · 物理学 2024-01-22 J. Amarel , D. Belitz , T. R. Kirkpatrick

Newton's second law has limited scope of application when transient phenomena are present. We consider a modification of Newton's second law in order to take into account a sudden change (surge) of angular momentum or linear momentum. We…

经典物理 · 物理学 2019-03-22 Mario J. Pinheiro , Marcus Büker

Quantum dynamics controlled by a time-dependent coupling constant are studied. It is proven that an energy eigenstate expectation value of work done by the system in a quench process cannot exceed the work in the corresponding quasi-static…

统计力学 · 物理学 2020-09-04 C. Itoi , M. Amano

We establish quantum thermodynamics for open quantum systems weakly coupled to their reservoirs when the system exhibits degeneracies. The first and second law of thermodynamics are derived, as well as a finite-time fluctuation theorem for…

统计力学 · 物理学 2017-03-08 Gregory Bulnes Cuetara , Massimiliano Esposito , Gernot Schaller