English
Related papers

Related papers: The effective $\beta$ value in a Simple Harmonic O…

200 papers

The stochastic effective theory approach, often called stochastic inflation, is widely used in cosmology to describe scalar field dynamics during inflation. The existing formulations are, however, more qualitative than quantitative because…

General Relativity and Quantum Cosmology · Physics 2024-02-29 Archie Cable , Arttu Rajantie

Harmonic wave functions for integer and half-integer angular momentum are given in terms of the Euler angles $(\theta,\phi,\psi)$ that define a rotation in $SO(3)$, and the Euclidean norm in ${\mathbb R}^3$. Following a classical work by…

Quantum Physics · Physics 2023-08-09 Sergio A. Hojman , Eduardo Nahmad-Achar , Adolfo Sánchez-Valenzuela

The nonlinear coefficient {\gamma} of the step-index single-mode fiber (SMF) is inversely proportional to the effective area of that fiber. An analytical expression for the effective area of the hybrid HE11-mode of the SMF is derived for…

Optics · Physics 2023-04-10 W. Astar

We use a locally constant field approximation (LCFA) to study the one-loop Heisenberg-Euler effective action in a particular class of slowly varying inhomogeneous electric fields of Lorentzian shape with $0\leq d\leq 4$ inhomogeneous…

High Energy Physics - Phenomenology · Physics 2017-04-25 Felix Karbstein

The effective action on an orbifolded sphere is computed for minimally coupled scalar fields. The results are presented in terms of derivatives of Barnes zeta-functions and it is shown how these may be evaluated. Numerical values are shown.…

High Energy Physics - Theory · Physics 2009-10-22 J. S. Dowker

We investigate properties of ($\alpha,\beta$)-harmonic functions. First, we discuss the coefficient estimates for ($\alpha,\beta$)-harmonic functions. In particular, we obtain Heinz's inequality for ($\alpha,\beta$)-harmonic functions,…

Complex Variables · Mathematics 2026-04-09 Jinjing Qiao , Jiale Chang , Antti Rasila

The shape of Bose-Einstein (or HBT) correlation functions is determined for the case when particles are emitted from a stable source, obtained after convolutions of large number of elementary random processes. The two-particle correlation…

Nuclear Theory · Physics 2007-05-23 T. Csorgo , S. Hegyi , W. A. Zajc

We continue our previous application of supersymmetric quantum mechanical methods to eigenvalue problems in the context of some deformed canonical commutation relations leading to nonzero minimal uncertainties in position and/or momentum.…

Mathematical Physics · Physics 2011-07-19 C. Quesne , V. M. Tkachuk

We decompose the Hilbert space of wave functions into two subspaces, and assign to a given observable two effective representatives that act in the model space. The first serves to determine some of the eigenvalues of the full observable,…

Mathematical Physics · Physics 2007-05-23 C. P. Viazminsky , James P. Vary

The scaled harmonic oscillator basis (SHO) is derived by a local scaling-point transformation of the spherical harmonic oscillator radial wave functions. The unitary scaling transformation produces a basis with improved asymptotic…

Nuclear Theory · Physics 2008-11-26 M. Stoitsov , P. Ring , D. Vretenar , G. A. Lalazissis

Effective spectral functions of the $\rho$ meson are reconstructed by considering the lifetimes inside different media using the hadronic transport SMASH (Simulating Many Accelerated Strongly-interacting Hadrons). Due to inelastic…

High Energy Physics - Phenomenology · Physics 2023-03-08 Renan Hirayama , Jan Staudenmaier , Hannah Elfner

The pseudospectral method is a powerful tool for finding highly precise solutions of Schr\"{o}dinger's equation for few-electron problems. We extend the method's scope to wave functions with non-zero angular momentum and test it on several…

Atomic Physics · Physics 2013-05-29 Paul E. Grabowski , David F. Chernoff

A prolate $\gamma$-rigid version of the Bohr-Mottelson Hamiltonian with a quartic anharmonic oscillator potential in $\beta$ collective shape variable is used to describe the spectra for a variety of vibrational-like nuclei. Speculating the…

Nuclear Theory · Physics 2014-07-22 R. Budaca

Having first performed a Monte Carlo simulation to justify the analysis technique to be used, we then analyze the Bose-Einstein correlation functions from CERN experiment NA44 in the context of the core-halo model. Although experimental…

Nuclear Theory · Physics 2008-11-26 S. Nickerson , T. Csorgo , D. Kiang

Surface Acoustic Wave (SAW) is a powerful technique for investigating quantum phases appearing in two-dimensional electron systems. The electrons respond to the piezoelectric field of SAWthrough screening, attenuating its amplitude and…

Mesoscale and Nanoscale Physics · Physics 2026-01-27 Xiao Liu , Mengmeng Wu , Renfei Wang , Xinghao Wang , Wenfeng Zhang , Yujiang Dong , Rui-Rui Du , Yang Liu , Xi Lin

This paper uses the beta function formalism to extend the analysis of quintessence cosmological parameters to the logarithmic and exponential dark energy potentials. The previous paper (Thompson 2018) demonstrated the formalism using power…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-14 Rodger I. Thompson

We consider the problem of determining the beta-functions for any reduced effective field theory. Even though not all the Green's functions of a reduced effective field theory are renormalizable, unlike the full effective field theory,…

High Energy Physics - Phenomenology · Physics 2010-02-03 Martin B. Einhorn , Jose Wudka

The unitary operator which transforms a harmonic oscillator system of time-dependent frequency into that of a simple harmonic oscillator of different time-scale is found, with and without an inverse-square potential. It is shown that for…

Quantum Physics · Physics 2009-11-06 Dae-Yup Song

Owing to the extreme smallness of any noncommutative scale that may exist in nature, both in the spatial and momentum sector of the quantum phase-space, a credible possibility of their detection lies in the present day gravitational wave…

High Energy Physics - Theory · Physics 2018-03-08 Sunandan Gangopadhyay , Anirban Saha , Swarup Saha

The semi-exponential basis set of radial functions (A.M. Frolov, Physics Letters A {\bf 374}, 2361 (2010)) is used for variational computations of bound states in three-electron atomic systems. It appears that semi-exponential basis set has…

High Energy Physics - Phenomenology · Physics 2011-03-21 Alexei M Frolov
‹ Prev 1 3 4 5 6 7 10 Next ›