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13 results on '"Fried, Herbert M."'

1. QCD Effective Locality : A Theoretical and Phenomenological Review

Author

Fried, Herbert M, Gabellini, Yves, Grandou, Thierry, and Tsang, Peter H

Subjects
High Energy Physics - Theory
Abstract

About ten years ago the use of standard functional manipulations was demonstrated to imply an unexpected property satisfied by the fermionic Green's functions of QCD and dubbed Effective Locality. This feature of QCD is nonperturbative as it results from a full gauge invariant integration of the gluonic degrees of freedom. In this review article, a few salient theoretical aspects and phenomenological applications of this property are summarized., Comment: 32 pages, 6 figures

Published
2021

2. On the non-perturbative realization of QCD gauge-invariance

Author

Fried, Herbert M., Grandou, Thierry, and Hofmann, Ralf

Subjects
High Energy Physics - Theory
Abstract

A few years ago the use of standard functional manipulations was demonstrated to imply an unexpected property satisfied by the fermionic Green's functions of QCD: effective locality. This feature of QCD is non-perturbative as it results from a full integration of the gluonic degrees of freedom. In this paper, previous derivations of effective locality are reviewed, corrected, and enhanced. Focussing on the way non-abelian gauge invariance is realized in the non-perturbative regime of QCD, the deeper meaning of effective locality is discussed., Comment: 18 pages

Published
2017
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3. Comparison of Gluon Bundle based QCD Curves with ISR Elastic pp Scattering Data

Author

Fried, Herbert M., Tsang, Peter H., Gabellini, Yves, Grandou, Thierry, and Sheu, Yeuan Ming

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Theory
Abstract

Using previously described functional techniques for exact, non-perturbative, gauge-invariant renormalized QCD processes, a simplified version of the amplitudes - in which forms akin to Pomerons naturally appear - provides fits to ISR Elastic pp scattering data. Extension of this work to LHC reactions is presently underway., Comment: 12 pages, 9 figures

Published
2016

4. Non trivial generalizations of the Schwinger pair production result II

Author

Fried, Herbert M. and Gabellini, Yves

Subjects
High Energy Physics - Theory
Abstract

It is suggested that Schwinger's (1951) vacuum persistence probability against pair production by an intense but constant electric field is a very good approximation to the corresponding quantity if the field does not vary appreciably over distances less than m/e/E/5 pages, Comment: 5 pages

Published
2005
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7. Bloch-Nordsieck estimates of a T > 0 scalar field model

Author

Candelpergher, Bernard, Fried, Herbert M., Grandou, Thierry, Laboratoire Jean Alexandre Dieudonné (JAD), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Department of Physics [Providence], Brown University, and Institut Non Linéaire de Nice Sophia-Antipolis (INLN)

Subjects
Bloch–Nordsieck, Heat bath, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], PACS numbers: 11.10 Wx, 11.15 Tk, Matsubara formalism, infrared approximation
Abstract

In anticipation of subsequent application to QED and QCD, we consider the case of a model, high temperature, relativistic, scalar field theory. We introduce into the exact, nonperturbative, functional expressions of this "quenched" model, a new Fradkin representation, and extract the infrared/Bloch–Nordsieck/(IR/BN) contributions of every perturbative graph, in order to circumvent the lack of a clear-cut separation of energy scales of previous semiperturbative treatments. Our results are applicable to the absorption of a fast particle which enters a heat bath, as well as to the propagation of a symmetric pulse within the thermal medium due to the appearance of an instantaneous, shockwave-like source acting in the medium. In momentum space, the former case displays a propagator which decays exponentially with increasing time, in addition to a new damping factor independent of time. The latter case displays an exponential growth with time of the symmetric pulse, generating effective and increasing plasmon waves, in competition with damping independent of time. When extended to QCD, qualitative applications could be made to RHIC scattering, in which a fireball appears, expands and is damped away.

Published
2005

8. Non trivial generalizations of the Schwinger pair production result

Author

Avan, Jean, Fried, Herbert M., Gabellini, Yves, Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Department of Physics [Providence], Brown University, Institut Non Linéaire de Nice Sophia-Antipolis (INLN), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), and Université Nice Sophia Antipolis (1965 - 2019) (UNS)

Subjects
High Energy Physics - Theory, Nuclear and High Energy Physics, PACS: 11.15.Tk, 12.20.Ds, 12.38.Lg, 010308 nuclear & particles physics, FOS: Physical sciences, 01 natural sciences, functional analysis, electron pair production, High Energy Physics - Theory (hep-th), light cones, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, 010306 general physics, quantum field theory
Abstract

We present new, non trivial generalizations of the recent Tomaras, Tsamis and Woodard extension of the original Schwinger formula for charged pair production in a constant field., 11 pages

Published
2002

9. Non perturbative QCD. Proceedings of the sixth workshop, Paris, France, 5-9 June 2001

Author

Fried, Herbert M., Gabellini, Yves, Mueller, Berndt, Department of Physics [Providence], Brown University, Institut Non Linéaire de Nice Sophia-Antipolis (INLN), Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th]
Abstract

ISBN 981-02-4748-6

Published
2002

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