scholarly journals Strongly Interacting Matter Phase Diagram in the presence of Magnetic Fields in an Extended Effective Lagrangian Approach with Explicit Chiral Simmetry Breaking Interactions

2018 ◽  
Author(s):  
Joao Moreira ◽  
Jorge Morais ◽  
Brigitte Hiller ◽  
Alexander Andreevich Osipov ◽  
Alex Heinz Blin
Keyword(s):  
Phase Diagram ◽  
Magnetic Fields ◽  
Lagrangian Approach ◽  
Strongly Interacting ◽  
Effective Lagrangian ◽  
Matter Phase

Investigating the microscopic properties of strongly interacting matter with HADES

Open Physics ◽  
2012 ◽  
Vol 10 (6) ◽  
Author(s):  
Tetyana Galatyuk ◽  
Manuel Lorenz
Keyword(s):  
Phase Diagram ◽  
Heavy Ion ◽  
Nucleon Nucleon ◽  
Reference Spectrum ◽  
Medium Effects ◽  
Ion Collisions ◽  
Strongly Interacting ◽  
Energy Domain ◽  
Matter Phase ◽  
Chemical Freeze

AbstractIn the energy domain of 1–2 GeV kinetic energy per nucleon, HADES has measured rare and penetrating probes in elementary and heavy ion collisions. Our results demonstrate that electron pair emission in C+C collisions can essentially be explained as a superposition of independent N+N collisions. HADES results on e+e− production in Ar+KCl collisions, however, show a strong enhancement of the dilepton yield relative to a reference spectrum obtained from elementary nucleon-nucleon reactions, signal the onset of medium effects beyond the superposition of individual N+N collisions. Intriguing results where also obtained from the reconstruction of hadrons with open and hidden strangeness. Analyses of the experimentally obtained hadronic yields measured in Ar+KCl allows to extract the chemical freeze-out conditions in the T -µB phase diagram of strongly interacting matter. While the measured abundance of all reconstructed particles are well described assuming thermalization, the also reconstructed double strange baryon ≡− appears about ten times more abundant than expected. This result will be discussed in the context of the exploration of the nuclear matter phase diagram in the region of finite density. Further investigations to search for significant medium effects, will be followed over the coming years with an upgraded HADES detector.

scholarly journals Influence of the Effective Potential on the Crossover Width in the Two Flavor Polyakov-Nambu-Jona-Lasinio Model

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
E. Valbuena-Ordóñez ◽  
N. B. Mata-Carrizal ◽  
A. J. Garza-Aguirre ◽  
J. R. Morones-Ibarra
Keyword(s):  
Phase Diagram ◽  
Phase Diagrams ◽  
Effective Potential ◽  
Crossover Region ◽  
Effective Potentials ◽  
End Point ◽  
Strongly Interacting ◽  
Njl Model ◽  
Matter Phase

We study the strongly interacting matter phase diagram on the T−μ plane through the two flavor Polyakov extended NJL model. We compare the phase diagrams obtained from three different effective potentials, focusing on the behavior of the width of the crossover region and the critical end point for each case. We describe various susceptibilities to obtain the chiral crossover and the color deconfinement crossover.

scholarly journals Photoproduction γp→K+Λ(1520) in an effective Lagrangian approach

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Neng-Chang Wei ◽  
Yu Zhang ◽  
Fei Huang ◽  
De-Min Li
Keyword(s):  
Lagrangian Approach ◽  
Effective Lagrangian

ANISOTROPIC VORTEX DYNAMICS AND PHASE DIAGRAM OF YBa2Cu3O7 SINGLE CRYSTALS WITH CANTED COLUMNAR DEFECTS

1996 ◽  
Vol 10 (22) ◽  
pp. 2723-2743 ◽  
Author(s):  
D. S. REED ◽  
N.-C. YEH ◽  
W. JIANG ◽  
U. KRIPLANI ◽  
M. KONCZYKOWSKI ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Magnetic Fields ◽  
Vortex Dynamics ◽  
Flow Model ◽  
Flux Flow ◽  
Thermally Activated ◽  
Liquid Transition ◽  
Columnar Defects ◽  
Thermally Activated Flux Flow ◽  
Activated Flux

The anisotropic vortex dynamics and phase diagram are determined for a YBa 2 Cu 3 O 7 single crystal with columnar defects oriented at ±7.5° relative to the crystalline c-axis. A second-order splayed-glass to vortex-liquid transition is manifested for magnetic fields nearly parallel to the columns via the critical scaling of vortex AC and DC transport properties. In contrast, for magnetic fields aligned close to the ab-plane, an XY-like vortex-glass transition prevails. For magnetic fields at intermediate angles, there is no evidence of any vortex phase transition, and the vortex dynamics is described in terms of the thermally activated flux flow model.

scholarly journals Effective-Lagrangian approach to γγ → WW I: Couplings and amplitudes

2006 ◽  
Vol 45 (3) ◽  
pp. 679-691 ◽  
Author(s):  
O. Nachtmann ◽  
F. Nagel ◽  
M. Pospischil ◽  
A. Utermann
Keyword(s):  
Lagrangian Approach ◽  
Effective Lagrangian
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