Chiral symmetry breaking as open string tachyon condensation

2007/02/20 by Roberto Casero, Elias Kiritsis, Angel Paredes +1 · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Chiral symmetry breaking #Cosmology and Gravitation Theories #Gauge theory #Mathematical physics #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum chromodynamics #Quark #String (physics) #String theory #hep-ph #hep-th

paper · pdf · doi:10.1016/j.nuclphysb.2007.07.009

published as Nucl.Phys.B787:98-134,2007 · 30 pages + 5 appendices, 2 figures

arxiv created 2007/02/20 · openalex publication_date 2007/07/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We consider a general framework to study holographically the dynamics of fundamental quarks in a confining gauge theory. Flavors are introduced by placing a set of (coincident) branes and antibranes on a background dual to a confining color theory. The spectrum contains an open string tachyon and its condensation describes the U(N_f)_L x U(N_f)_R -> U(N_f)_V symmetry breaking. By studying worldvolume gauge transformations of the flavor brane action, we obtain the QCD global anomalies and an IR condition that allows to fix the quark condensate in terms of the quark mass. We find the expected N_f² Goldstone bosons (for m_q=0), the Gell-Mann-Oakes-Renner relation (for m_q small) and the η' mass. Remarkably, the linear confinement behavior for the masses of highly excited spin-1 mesons, m_n² ~ n is naturally reproduced.

Citations

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Cited by

• Note on chiral symmetry breaking from intersecting branes
• Gravitational waves from holographic neutron star mergers
• Glueball spectra of SQCD-like theories
• Predictions for neutron star mergers from the gauge/gravity duality