Results 31 to 40 of about 48,968 (172)

Semiclassical shell structure and nuclear double-humped fission barriers [PDF]

open access: yesЯдерна фізика та енергетика, 2010
We derived the semiclassical trace formulas for the level density as sums over periodic-orbit families and isolated orbits within the improved stationary phase method.
A. G. Magner
doaj  

Semiclassical Asymptotics of the Focusing Nonlinear Schrodinger Equation for Square Barrier Initial Data

open access: yes, 2009
The small dispersion limit of the focusing nonlinear Schroödinger equation (fNLS) exhibits a rich structure with rapid oscillations at microscopic scales.
Jenkins, Robert M.
core   +5 more sources

Operating a Contextual Stern–Gerlach Apparatus

open access: yesAnnalen der Physik, Volume 538, Issue 9, September 2026.
We reappraise the Stern–Gerlach experiment in view of the contextual monitoring of a cavity QED system output. The dynamical collapse of a macroscopic coherent‐state superposition for the cavity field, allowing for a binary outcome in the “spin” degree of freedom, is complementary to the persistence of quantum interference, after passing through ...
Th. K. Mavrogordatos
wiley   +1 more source

Semiclassical asymptotic behavior of orthogonal polynomials [PDF]

open access: yesLetters in Mathematical Physics, 2020
Our goal is to find asymptotic formulas for orthonormal polynomials $P_{n}(z)$ with the recurrence coefficients slowly stabilizing as $n\to\infty$. To that end, we develop spectral theory of Jacobi operators with long-range coefficients and study the corresponding second order difference equation. We suggest an Ansatz for its solutions playing the role
openaire   +4 more sources

On a selection principle for multivalued semiclassical flows [PDF]

open access: yes, 2014
We study the semiclassical behaviour of solutions of a Schr ̈odinger equation with a scalar po- tential displaying a conical singularity. When a pure state interacts strongly with the singularity of the flow, there are several possible classical ...
Kyza, Irene   +2 more
core  

Reweighting Scheme for the Calculation of Grand‐Canonical Expectation Values in Quantum Monte Carlo Simulations With a Fermion Sign Problem

open access: yesContributions to Plasma Physics, Volume 66, Issue 7-8, September 2026.
ABSTRACT Ab initio path integral Monte Carlo (PIMC) simulations constitute the gold standard for the estimation of a broad range of equilibrium properties of a host of interacting quantum many‐body systems spanning a broad range of conditions from ultracold atoms to warm dense quantum plasmas.
Paul Hamann   +2 more
wiley   +1 more source

Asymptotic Solutions of the Phase Space Schrodinger Equation: Anisotropic Gaussian Approximation [PDF]

open access: yes, 2014
We consider the singular semiclassical initial value problem for the phase space Schrodinger equation. We approximate semiclassical quantum evolution in phase space by analyzing initial states as superpositions of Gaussian wave packets and applying ...
Karageorge, Panos D., Makrakis, G.N.
core  

Microlocal analysis, sharp spectral asymptotics and applications i: semiclassical microlocal analysis and local and microlocal semiclassical asymptotics

open access: yes, 2019
The prime goal of this monograph, which comprises a total of five volumes, is to derive sharp spectral asymptotics for broad classes of partial differential operators using techniques from semiclassical microlocal analysis, in particular, propagation of ...
Ivrii, Victor
core   +1 more source

Double-logarithms in N $$ \mathcal{N} $$ = 8 supergravity: impact parameter description & mapping to 1-rooted ribbon graphs

open access: yesJournal of High Energy Physics, 2019
The set of double-logarithmic (DL) contributions (α t ln2 s) n to the 4-graviton amplitude in N $$ \mathcal{N} $$ = 8 supergravity (SUGRA), with α being the gravitational coupling and (s, t) the Mandelstam invariants, is studied in impact parameter (ρ ...
Agustín Sabio Vera
doaj   +1 more source

Quantum Phenomena in Molecular and Biological Systems: A Decoherence‐Based Decision Framework With Falsifiable Predictions and a Failure‐Mode Taxonomy

open access: yesAdvanced Physics Research, Volume 5, Issue 8, August 2026.
A physics‐grounded framework based on decoherence timescales (τ_dec vs τ_func), Markovian validity, and falsifiability criteria is applied across molecular systems to distinguish where quantum effects are necessary, marginal, or irrelevant. The analysis integrates quantum chemistry, biological quantum mechanisms, and quantum computing under a unified ...
Sarfaraz K. Niazi
wiley   +1 more source

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