Aspects on Effective Theories and the QCD Transition

Nicola, Á. Gómez

doi:10.3390/sym12060945

Cited by 5 publications

(2 citation statements)

References 160 publications

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“…Stanley J. Brodsky and Guy F. de Téramond first discovered the light front holographic technique in 2006 by identifying the electric charge and inertia variation from either the subatomic particle fluxes or the stressenergy tensor of the underlying forces of nature within a hadron in AdS to physical space-time [55]. Although it is unknown if QCD has a gravity counterpart, the gauge/gravity correspondence may be altered at a rough approximation of the AdS fifth-dimension collaborate, which determines the size of the complex formed, to account for the pre-trial detention processes.…”

Section: Discussionmentioning

confidence: 99%

A Comprehensive Overview of Photon-Proton Scattering and QCD Methodology

Afzal,

Rani

2024

JESTT

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The AdS/CFT correspondence is used as a helpful reference in the light front hyperbolic geometry technique, which solves this issue by mapping a confining gauge theory parameterized on the light front to a greater anti-de Sitter space. Three different interaction processes exist Direct or angular the target photon quark and the photon pair directly. When a lepton-antilepton pair is produced, only quantum electrodynamics (QED) is used; however, when a quark-antiquark pair is produced, both QED and perturbative quantum chromodynamics (QCD) are used. A deep-inelastic electron-photon scattering experiment was used to study the photon structure function, which describes the photon inherent quark composition: Single resolved: the desired spectroscopy quark combination creates the vector meson, one of the constituents of relationships to the investigating photon. The main focus of the current study was on photon-proton and QCD methodology. The main theoretical conclusion resulting from the work carried out can be used in the development of the conceptual concept of further researchers and this work also will be a guideline for future researchers.

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Section: Discussionmentioning

confidence: 99%

A Comprehensive Overview of Photon-Proton Scattering and QCD Methodology

Afzal,

Rani

2024

JESTT

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“…Chiral symmetry restoration is a key ingredient to understand the QCD phase diagram [ 1 – 3 ]. The remarkable advances achieved in lattice simulations have revealed a crossover transition at 155 MeV for physical quark masses and vanishing chemical potentials [ 4 – 8 ].…”

Section: Introductionmentioning

confidence: 99%

The role of strangeness in chiral and $$U(1)_A$$ restoration

et al. 2021

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We use recently derived Ward identities and lattice data for the light- and strange-quark condensates to reconstruct the scalar and pseudoscalar susceptibilities ($$\chi _S^\kappa $$ χ S κ , $$\chi _P^K$$ χ P K ) in the isospin 1/2 channel. We show that $$\chi _S^\kappa $$ χ S κ develops a maximum above the QCD chiral transition, after which it degenerates with $$\chi _P^K$$ χ P K . We also obtain $$\chi _S^\kappa $$ χ S κ within Unitarized Chiral Perturbation Theory (UChPT) at finite temperature, when it is saturated with the $$K_0^*(700)$$ K 0 ∗ ( 700 ) (or $$\kappa $$ κ ) meson, the dominant lowest-energy state in the isospin 1/2 scalar channel of $$\pi K$$ π K scattering. Such UChPT result reproduces the expected peak structure, revealing the importance of thermal interactions, and makes it possible to examine the $$\chi _S^\kappa $$ χ S κ dependence on the light- and strange-quark masses. A consistent picture emerges controlled by the $$m_l/m_s$$ m l / m s ratio that allows one studying $$K-\kappa $$ K - κ degeneration in the chiral, two-flavor and SU(3) limits. These results provide an alternative sign for $$O(4)\times U(1)_A$$ O ( 4 ) × U ( 1 ) A restoration that can be explored in lattice simulations and highlight the role of strangeness, which regulated by the strange-quark condensate helps to reconcile the current tension among lattice results regarding $$U(1)_A$$ U ( 1 ) A restoration.

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The pion-kaon scattering amplitude and the $$ {K}_0^{\ast }(700) $$ and K∗(892) resonances at finite temperature

Nicola,

de Elvira,

Vioque-Rodríguez

2023

J. High Energ. Phys.

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We perform a complete calculation of the pion-kaon scattering amplitude in Chiral Perturbation Theory at finite temperature, paying particular attention to the analytic structure of the amplitude and the main differences with respect to the zero temperature case. We also extend the Inverse Amplitude Method at finite temperature for unequal-mass scattering processes, which allows us to unitarize the amplitude and obtain the thermal evolution of the $$ {K}_0^{\ast }(700) $$ K 0 ∗ 700 and K∗(892) pole parameters. As a direct application of our analysis, we show that the thermal evolution of the $$ {K}_0^{\ast }(700) $$ K 0 ∗ 700 resonance is crucial to explain the behavior of the scalar susceptibility for isospin I = 1/2, which in turn, is directly connected with chiral and U(1)A restoration properties of the QCD phase diagram.

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Aspects on Effective Theories and the QCD Transition

Cited by 5 publications

References 160 publications

A Comprehensive Overview of Photon-Proton Scattering and QCD Methodology

A Comprehensive Overview of Photon-Proton Scattering and QCD Methodology

The role of strangeness in chiral and $$U(1)_A$$ restoration

The pion-kaon scattering amplitude and the $$ {K}_0^{\ast }(700) $$ and K∗(892) resonances at finite temperature

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