English
Related papers

Related papers: Dynamical Local Chirality and Chiral Symmetry Brea…

200 papers

We study the chiral condensate at finite temperature in AdS/QCD in a time-dependent background, in which the position of the black-hole horizon $z_h$ changes with time, producing an increasing or decreasing temperature. Conformal invariance…

High Energy Physics - Phenomenology · Physics 2025-03-27 Floriana Giannuzzi , Stefano Nicotri

The breaking of chiral symmetry in holographic light-front QCD is encoded in its longitudinal dynamics with its chiral limit protected by the superconformal algebraic structure which governs its transverse dynamics. The scale in the…

High Energy Physics - Phenomenology · Physics 2022-01-05 Guy F. de Teramond , Stanley J. Brodsky

Chirality is a fundamental symmetry concept describing discrete states, i.e., left-handed, right-handed, or achiral, and existing at disparate scales and in many categories of scientific fields. Even though symmetry breaking is…

We show that the non-strange scalar $\sigma$ meson, as now reported in the 1996 PDG tables, is a natural consequence of crossing symmetry as well as chiral dynamics for both strong interaction low energy $\pi\pi$ scattering and also $K \to…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. D. Scadron

We review the implications of the spontaneous chiral symmetry breaking in QCD for processes involving one, two or more nucleons.

High Energy Physics - Phenomenology · Physics 2015-06-25 V. Bernard , N. Kaiser , Ulf-G. Meißner

Chiral symmetry breaking is ubiquitous in biological systems, from DNA to bacterial suspensions. A key unresolved problem is how chiral structures may spontaneously emerge from achiral interactions. We study a simple model of bacterial…

Soft Condensed Matter · Physics 2016-08-18 Rebekka E. Breier , Robin L. B. Selinger , Giovanni Ciccotti , Stephan Herminghaus , Marco G. Mazza

The spin dynamics of electrons in chiral molecular systems remain a topic of intense interest, particularly regarding whether geometric chirality inherently induces spin polarization in current-carrying electrons. In this work, we employ ab…

On a bounded, measurable domain of non-negative current-quark mass, realistic models of QCD's gap equation can simultaneously admit two inequivalent dynamical chiral symmetry breaking (DCSB) solutions and a solution that is unambiguously…

Nuclear Theory · Physics 2008-11-26 Lei Chang , Yu-Xin Liu , Mandar S. Bhagwat , Craig D. Roberts , Stewart V. Wright

We explore a possible phase where chiral $SU(2)_L \times SU(2)_R$ symmetry is spontaneously broken while its center $Z_2$ symmetry remains unbroken and its consequence on thermal quantities. In this phase, chiral symmetry breaking is driven…

High Energy Physics - Phenomenology · Physics 2010-02-04 M. Harada , C. Sasaki , S. Takemoto

We develop an effective field theory of QCD and QCD-like theories, based on the hidden local symmetry (HLS) model. We formulate the chiral perturbation theory with loops of rho as well as pi and further include quadratic divergences which…

High Energy Physics - Phenomenology · Physics 2024-06-17 Masayasu Harada , Koichi Yamawaki

The article seeks to formulate a synergetic law that is posited to be of common physicochemical and biological nature: an evolving system, possessing free energy and elements with chiral asymmetry may change the type of symmetry inside one…

Adaptation and Self-Organizing Systems · Physics 2012-12-10 Vsevolod A. Tverdislov

In the dilute instanton gas model of the QCD vacuum, one expects a strong spatial correlation between chirality and the maxima of the Dirac eigenvectors with small eigenvalues. Following Horvath, {\it et al.} we examine this question using…

High Energy Physics - Lattice · Physics 2009-11-07 T. Blum , N. Christ , C. Cristian , C. Dawson , X. Liao , G. Liu , R. Mawhinney , L. Wu , Y. Zhestkov

It is shown that the chiral symmetry is spontaneously broken by a constant magnetic field in QED. The dynamical mass of fermions (energy gap in the fermion spectrum) is $m_{dyn}\simeq C\sqrt{eB}\exp\left[-\left(\pi/\alpha\right)…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. P. Gusynin , V. A. Miransky , I. A. Shovkovy

In these lectures we review recent results on universal fluctuations of QCD Dirac spectra and applications of Random Matrix Theory (RMT) to QCD. We review general properties of Dirac spectra and discuss the relation between chiral symmetry…

High Energy Physics - Theory · Physics 2007-05-23 J. J. M. Verbaarschot

The gap Delta = 4 pi f_pi ~ 1.2 GeV of spontaneous chiral symmetry breaking is introduced as a scale delineating resonance and continuum regions in the QCD spectral sum rules for vector mesons. Basic current algebra results are easily…

High Energy Physics - Phenomenology · Physics 2009-10-31 E. Marco , W. Weise

The interplay between shear band (SB) formation and boundary conditions (BC) is investigated in wormlike micellar systems (CPyCl--NaSal) using ultrasonic velocimetry coupled to standard rheology in Couette geometry. Time-resolved velocity…

Soft Condensed Matter · Physics 2009-11-25 Paul Lettinga , Sébastien Manneville

We investigate the chiral properties of near-zero modes for thick classical center vortices in SU (2) lattice gauge theory as examples of the phenomena which may arise in a vortex vacuum. In particular we analyze the creation of near-zero…

High Energy Physics - Lattice · Physics 2013-12-16 Roman Höllwieser , Thomas Schweigler , Manfried Faber , Urs M. Heller

Chiral symmetry is an essential concept in understanding QCD at low energy. We treat the chiral condensate, which measures the spontaneous breaking of chiral symmetry, as a free parameter to investigate the effect of partially restored…

High Energy Physics - Phenomenology · Physics 2008-11-26 Youngman Kim , Hyun Kyu Lee

The effects of an external field on the dynamics of chiral symmetry breaking are studied using quenched, ladder QED as our model gauge field theory. It is found that a uniform external magnetic field enables the chiral symmetry to be…

High Energy Physics - Theory · Physics 2009-10-31 C. N. Leung

Effective chiral restoration in the hadronic spectrum has been conjectured as an explanation of multiplets of nearly degenerate seen in highly excited hadrons. The conjecture depends on the states being insensitive to the dynamics of…

High Energy Physics - Phenomenology · Physics 2009-11-11 Thomas D. Cohen