scholarly journals HIGH ENERGY FACTORIZATION AT NLO: LIPATOV'S EFFECTIVE ACTION REVISITED

2014 ◽  
Vol 25 ◽  
pp. 1460027
Author(s):  
G. CHACHAMIS ◽  
M. HENTSCHINSKI ◽  
J. D. MADRIGAL MARTÍNEZ ◽  
A. SABIO VERA
Keyword(s):  
Regge Trajectory ◽  
Effective Action ◽  
Gluon Propagator ◽  
High Energy ◽  
Reggeized Gluon ◽  
Self Energy

We discuss aspects of our recent derivation of the gluon Regge trajectory at two loop from Lipatov's high energy effective action. We show how the gluon Regge trajectory can be rigorously defined through renormalization of the high energy divergence of the reggeized gluon propagator. We furthermore provide some details on the determination of the two-loop reggeized gluon self-energy.

scholarly journals On correlators of Reggeon fields and operators of Wilson lines in high energy QCD

2018 ◽  
Vol 33 (35) ◽  
pp. 1850204 ◽  
Author(s):  
S. Bondarenko ◽  
S. Pozdnyakov
Keyword(s):  
Effective Action ◽  
Wilson Line ◽  
High Energy ◽  
Reggeized Gluon

In this paper we derive Dyson–Schwinger hierarchy of the equations for the correlators of reggeized gluon fields in the framework of Lipatov’s high energy QCD effective action formalism.[Formula: see text] The explicit perturbative expressions for the correlators till correlator of four Reggeon fields inclusively are obtained and different perturbative schemes for the solutions of the equation for the two-field correlator are discussed. A correspondence between the correlators of reggeized gluon fields and Wilson line operators of longitudinal gluon field is established with the help of the results of Ref. 10. The connection between the JIMWLK-Balitsky formalism and Lipatov’s effective action approach and applications of the obtained results are also discussed.

scholarly journals Gluon Regge trajectory at two loops from Lipatovʼs high energy effective action

2013 ◽  
Vol 876 (2) ◽  
pp. 453-472 ◽  
Author(s):  
G. Chachamis ◽  
M. Hentschinski ◽  
J.D. Madrigal Martínez ◽  
A. Sabio Vera
Keyword(s):  
Regge Trajectory ◽  
Effective Action ◽  
High Energy

scholarly journals Quark contribution to the gluon Regge trajectory at NLO from the high energy effective action

2012 ◽  
Vol 861 (1) ◽  
pp. 133-144 ◽  
Author(s):  
G. Chachamis ◽  
M. Hentschinski ◽  
J.D. Madrigal Martínez ◽  
A. Sabio Vera
Keyword(s):  
Regge Trajectory ◽  
Effective Action ◽  
High Energy ◽  
Quark Contribution

Forward jet production & quantum corrections to the gluon Regge trajectory from Lipatov’s high energy effective action

2014 ◽  
Vol 45 (4) ◽  
pp. 788-799 ◽  
Author(s):  
G. Chachamis ◽  
M. Hentschinski ◽  
J. D. Madrigal Martínez ◽  
A. Sabio Vera
Keyword(s):  
Regge Trajectory ◽  
Effective Action ◽  
High Energy ◽  
Quantum Corrections ◽  
Jet Production

scholarly journals Computing the full two-loop gluon Regge trajectory within Lipatov's high energy effective action

2013 ◽  
Author(s):  
Grigorios Chachamis ◽  
Martin Hentschinski ◽  
JOSÉ DANIEL Madrigal ◽  
Agustin Sabio Vera
Keyword(s):  
Regge Trajectory ◽  
Effective Action ◽  
High Energy

Kinematic Approximations in TED and RHEED Analysis of Reconstructed Surfaces

1990 ◽  
Vol 48 (2) ◽  
pp. 396-397
Author(s):  
L. -M. Peng ◽  
M. J. Whelan
Keyword(s):  
Electron Diffraction ◽  
Kinematic Analysis ◽  
Incident Beam ◽  
High Energy ◽  
Energy Electron ◽  
Great Success ◽  
High Energy Electron ◽  
Kinematic Approximation ◽  
Reconstructed Surfaces

In recent years there has been a trend in the structure determination of reconstructed surfaces to use high energy electron diffraction techniques, and to employ a kinematic approximation in analyzing the intensities of surface superlattice reflections. Experimentally this is motivated by the great success of the determination of the dimer adatom stacking fault (DAS) structure of the Si(111) 7 × 7 reconstructed surface.While in the case of transmission electron diffraction (TED) the validity of the kinematic approximation has been examined by using multislice calculations for Si and certain incident beam directions, far less has been done in the reflection high energy electron diffraction (RHEED) case. In this paper we aim to provide a thorough Bloch wave analysis of the various diffraction processes involved, and to set criteria on the validity for the kinematic analysis of the intensities of the surface superlattice reflections.The validity of the kinematic analysis, being common to both the TED and RHEED case, relies primarily on two underlying observations, namely (l)the surface superlattice scattering in the selvedge is kinematically dominating, and (2)the superlattice diffracted beams are uncoupled from the fundamental diffracted beams within the bulk.

scholarly journals Master integrals for bipartite cuts of three-loop photon self energy

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
R. N. Lee ◽  
A. I. Onishchenko
Keyword(s):  
Spectral Density ◽  
High Energy ◽  
Elliptic Integrals ◽  
Iterated Integrals ◽  
Self Energy ◽  
Complete Elliptic Integrals ◽  
The One

Abstract We calculate the master integrals for bipartite cuts of the three-loop propagator QED diagrams. These master integrals determine the spectral density of the photon self energy. Our results are expressed in terms of the iterated integrals, which, apart from the 4m cut (the cut of 4 massive lines), reduce to Goncharov’s polylogarithms. The master integrals for 4m cut have been calculated in our previous paper in terms of the one-fold integrals of harmonic polylogarithms and complete elliptic integrals. We provide the threshold and high-energy asymptotics of the master integrals found, including those for 4m cut.

scholarly journals Thermal Dynamic Behavior in Bi-Zone Habitable Cell with and without Phase Change Materials

Proceedings ◽  
2020 ◽  
Vol 63 (1) ◽  
pp. 41
Author(s):  
Hanae El Fakiri ◽  
Lahoucine Ouhsaine ◽  
Abdelmajid El Bouardi
Keyword(s):  
Thermal Behavior ◽  
Thermal Comfort ◽  
Phase Change ◽  
Dynamic Behavior ◽  
Phase Change Materials ◽  
Energy Performance ◽  
High Energy ◽  
Water Heater ◽  
Simplified Modeling

The thermal dynamic behavior of buildings represents an important aspect of the energy efficiency and thermal comfort of the indoor environment. For this, phase change material (PCM) wallboards integrated into building envelopes play an important role in stabilizing the temperature of the human comfort condition. This article provides an assessment of the thermal behavior of a “bi-zone” building cell, which was built based on high-energy performance (HEP) standards and heated by a solar water heater system through a hydronic circuit. The current study is based on studying the dynamic thermal behavior, with and without implantation of PCMs on envelope structure, using a simplified modeling approach. The evolution of the average air temperature was first evaluated as a major indicator of thermal comfort. Then, an evaluation of the thermal behavior’s dynamic profile was carried out in this study, which allowed for the determination of the PCM rate anticipation in the thermal comfort of the building cell.

X‐ray determination of the Debye temperature at high pressure using high‐energy synchrotron radiation

1990 ◽  
Vol 68 (6) ◽  
pp. 2719-2722 ◽  
Author(s):  
A. Matsumuro ◽  
M. Kobayashi ◽  
T. Kikegawa ◽  
M. Senoo
Keyword(s):  
High Pressure ◽  
Synchrotron Radiation ◽  
Debye Temperature ◽  
High Energy ◽  
X Ray
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