Results 21 to 30 of about 2,417 (212)
Fast-forward scheme reexamined: Choice of time and quantization
Results in Physics, 2022 The fast-forward scheme for accelerating time evolution of quantum states through change of time is reexamined. Dirac’s homogeneous formalism for classical dynamics and canonical quantization warrant that the Schrödinger equation is covariant under ...
Sumiyoshi Abe
doaj +1 more source
Reparametrization invariance of path integrals [PDF]
Physics Letters B, 1999 Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html .
Kleinert, H., Chervyakov, A.
openaire +3 more sources
Non-local reparametrization action in coupled Sachdev-Ye-Kitaev models
Journal of High Energy Physics, 2021 We continue the investigation of coupled Sachdev-Ye-Kitaev (SYK) models without Schwarzian action dominance. Like the original SYK, at large N and low energies these models have an approximate reparametrization symmetry.
Alexey Milekhin
doaj +1 more source
Perturbative corrections to power suppressed effects in B ¯ $$ \overline{B} $$ → X u ℓν
Journal of High Energy Physics, 2021 We compute the O(α s ) corrections to the Wilson coefficients of the dimension five operators in inclusive semileptonic B decays in the limit of a massless final quark.
Bernat Capdevila +2 more
doaj +1 more source
Quantizing Chaplygin Hamiltonizable nonholonomic systems
Scientific Reports, 2022 In this article we develop a quantization procedure for Chaplygin Hamiltonizable nonholonomic systems—mechanical systems subject to non-integrable velocity constraints whose reduced mechanics is Hamiltonian after a suitable time reparametrization—using ...
Oscar E. Fernandez
doaj +1 more source
Reparametrization of n-Flows of Zero Entropy [PDF]
Transactions of the American Mathematical Society, 1979 Let ϕ \phi , ψ \psi be two ergodic n-parameter flows which preserve finite probability measures on their spaces X, Y. Let T be a nullset-preserving map: X → Y X\, \to \,Y sending each ϕ \phi -orbit homeomorphically to a ϕ \phi ...
Feldman, J., Nadler, D.
openaire +1 more source
General fluctuations of the heterotic pure spinor string on curved backgrounds
Journal of High Energy Physics, 2019 The general fluctuations, in the form of vertex operators, for the heterotic superstring in the pure spinor formalism are considered. The case of a flat background is reviewed and the case of a curved case is studied.
Osvaldo Chandia
doaj +1 more source
Climate change in a Point-Over-Threshold model: an example on ocean-wave-storm hazard in NE Spain [PDF]
Advances in Geosciences, 2010 A reparametrization of the Generalized Pareto Distribution is here proposed. It is suitable to parsimoniously check trend assumptions within a Point-Over-Threshold model of hazardous events.
R. Tolosana-Delgado +3 more
doaj +1 more source
Reparametrization of the COSMO Solvent Model for Semiempirical Methods PM6 and PM7
, 2019 An accurate description of solvation effects is of high importance in modeling biomolecular systems. Our main interest is to find an accurate yet efficient solvation model for semiempirical quantum-mechanical methods applicable to large protein–ligand ...
Jan Řezáč (1279317) +1 more
core +6 more sources
Towards the underlying gauge theory of the pure spinor superstring
Journal of High Energy Physics, 2019 Previous attempts to determine the worldsheet origin of the pure spinor formalism were not completely successful, but introduced important concepts that seem to be connected to its fundamental structure, e.g., emergent supersymmetry and the role of ...
Renann Lipinski Jusinskas
doaj +1 more source