Results 11 to 20 of about 1,170 (186)

Reparametrization invariance of path integrals [PDF]

open access: yesPhysics Letters B, 1999
Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html .
Kleinert, H., Chervyakov, A.
openaire   +3 more sources

Time-reparametrization invariances, multithermalization and the Parisi scheme

open access: yesSciPost Physics Core, 2023
The Parisi scheme for equilibrium and the corresponding slow dynamics with multithermalization - same temperature common to all observables, different temperatures only possible at widely separated timescales – imply one another.
Jorge Kurchan
doaj   +1 more source

Quantizing Chaplygin Hamiltonizable nonholonomic systems

open access: yesScientific 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

Perturbative corrections to power suppressed effects in B ¯ $$ \overline{B} $$ → X u ℓν

open access: yesJournal 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

General fluctuations of the heterotic pure spinor string on curved backgrounds

open access: yesJournal 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

Reparametrization invariance and partial re-summations of the heavy quark expansion

open access: yesJournal of High Energy Physics, 2018
We extend existing work on reparametrization invariance (RPI) of the heavy-quark expansion (HQE). RPI implies relations between different orders of the HQE.
Thomas Mannel, K. Keri Vos
doaj   +1 more source

Climate change in a Point-Over-Threshold model: an example on ocean-wave-storm hazard in NE Spain [PDF]

open access: yesAdvances 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 n-Flows of Zero Entropy [PDF]

open access: yesTransactions 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

Towards the underlying gauge theory of the pure spinor superstring

open access: yesJournal 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

Conformal blocks and bilocal vertex operator transition amplitudes

open access: yesJournal of High Energy Physics, 2022
We revisit the construction of the 2d conformal blocks of primary operator four-point functions as bilocal vertex operator correlators. We find an additional interpretation as a path integral over the reparametrizations of an intermediate cylinder.
Gideon Vos
doaj   +1 more source

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