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We study the behaviour of a nonrelativistic quantum particle interacting with different potentials in the spacetimes of topological defects. We find the energy spectra and show how they differ from their free-space values.

Quantum Physics · Physics 2007-05-23 Geusa de A. Marques , Valdir B. Bezerra

Theory uncertainties on non-local hadronic effects limit the New Physics discovery potential of the rare decays $B\to K^*\mu^+\mu^-$. We investigate prospects to disentangle New Physics effects in the short-distance coefficients from these…

High Energy Physics - Phenomenology · Physics 2020-01-08 Marcin Chrzaszcz , Andrea Mauri , Nicola Serra , Rafael Silva Coutinho , Danny van Dyk

Radioactive components of the interstellar medium provide an entirely-different and new aspect to the studies of the interstellar medium. Injected from sources of nucleosynthesis, unstable nuclei decay along their trajectories. Measurements…

High Energy Astrophysical Phenomena · Physics 2021-12-10 Roland Diehl

Quantum shape effect appears under the size-invariant shape transformations of strongly confined structures. Such a transformation distinctively influences the thermodynamic properties of confined particles. Due to their characteristic…

Mesoscale and Nanoscale Physics · Physics 2022-11-08 Alhun Aydin , Jonas Fransson , Altug Sisman

A few recent innovations of applicability of standard textbook Quantum Theory are reviewed. The three-Hilbert-space formulation of the theory (known from the interacting boson models in nuclear physics) is discussed in its slightly…

Mathematical Physics · Physics 2010-08-10 Miloslav Znojil

A recent discussion of quantum limitations to the fidelity with which superpositions of internal atomic energy levels can be generated by an applied, quantized, laser pulse is shown to be based on unrealistic physical assumptions. This…

Quantum Physics · Physics 2009-11-07 W. M. Itano

Many experiments have notably reported anomalies in radioactive decay rates with periodic variations and challenged the traditional belief of time-independent decays. This periodicity could potentially be explained by the presence of a…

High Energy Physics - Phenomenology · Physics 2025-08-19 Chang-Jie Dai , Tong Li

With recent developments in simulating nonadiabatic systems to high accuracy, it has become possible to determine how much energy is attributed to nuclear quantum effects beyond zero-point energy. In this work we calculate the…

Chemical Physics · Physics 2016-08-23 Yubo Yang , Ilkka Kylanpaa , Norm Tubman , Jaron Krogel , Sharon Hammes-Schiffer , David Ceperley

Recently, there has been a certain amount of activity around the theme of cosmological and astrophysical applications of noncommutative geometry models of particle physics. We study space-time non-commutativity applied to the hydrogen atom…

High Energy Physics - Phenomenology · Physics 2019-01-15 M. Moumni , A. BenSlama , S. Zaim

Occurrence of spacetime singularities is one of the peculiar features of Einstein gravity, signalling limitation on probing short distances in spacetime. This alludes to the existence of a fundamental length scale in nature. On contrary,…

General Relativity and Quantum Cosmology · Physics 2020-12-21 Omar El-Refy , Syed Masood , Li-Gang Wang , Ahmed Farag Ali

In the 80 years since the seminal Einstein, Podolsky, and Rosen (EPR) paper, physicists and philosophers have mused about the `spooky action at a distance' aspect of quantum mechanics that so bothered Einstein. In his formal analysis of…

History and Philosophy of Physics · Physics 2016-04-30 Stephen Boughn

We investigate the nonlinear interaction between a relativistically strong laser beam and a plasma in the quantum regime. The collective behavior of the electrons is modeled by a Klein-Gordon equation, which is nonlinearly coupled with the…

Plasma Physics · Physics 2011-07-26 Bengt Eliasson , Padma K. Shukla

The deep inelastic scattering of leptons off nuclei is considered within the the Bethe-Salpeter formalism. It is shown that nuclear short-range structure can be expressed in terms of the nucleon structure functions and four-dimensional…

Nuclear Theory · Physics 2007-05-23 Alexander Molochkov

We propose that whatever quantity controls the Heisenberg uncertainty relations (for a given complementary pair of observables) it should be identified with an effective Planck parameter. With this definition it is not difficult to find…

General Relativity and Quantum Cosmology · Physics 2021-03-17 John D. Barrow , Joao Magueijo

We analyze through the expectation value of the energy density the spatial nonlocality of single photons emitted by the spontaneous decay of a Hydrogen atom. By using a minimal coupling between the quantized electromagnetic field and the…

Quantum Physics · Physics 2025-01-09 Maxime Federico , Hans-Rudolf Jauslin

This paper gives a brief overview of the present and expected future limits on physics beyond the Standard Model (SM) from neutron beta decay, which is described by two parameters only within the SM. Since more than two observables are…

Nuclear Experiment · Physics 2012-11-05 G. Konrad , W. Heil , S. Baeßler , D. Počanić , F. Glück

The nucleation process under different external conditions is considered. It is shown that the duration of this process can be connected with the microscopic corrections to the free energy of the critical embryo. Connection between…

Statistical Mechanics · Physics 2008-08-25 Victor Kurasov

We review the status and prospects of theoretical studies of neutrino-nucleus interactions, and discuss the influence of the treatment of nuclear effects on the determination of oscillation parameters. The models developed to describe the…

Nuclear Theory · Physics 2017-11-01 Omar Benhar , Patrick Huber , Camillo Mariani , Davide Meloni

We consider quantum-decoherence effects in neutrino oscillation data. Working in the open quantum system framework we adopt a phenomenological approach that allows to parameterize the energy dependence of the decoherence effects. We…

High Energy Physics - Phenomenology · Physics 2023-09-19 Valentina De Romeri , Carlo Giunti , Thomas Stuttard , Christoph A. Ternes

We present the results of a phenomenological study of unpolarized nuclear structure functions for a wide kinematical region of x and Q^2. As a basis of our phenomenology we develop a model which takes into account a number of different…

High Energy Physics - Phenomenology · Physics 2014-11-18 S. A. Kulagin , R. Petti