Baryon charge from embedding topology and a continuous meson spectrum in a new holographic gauge theory

We review the holographic duals of gauge theories with eight supercharges obtained by adding very few flavors to pure supersymmetric Yang–Mills with 16 supercharges. Assuming a brane-probe limit, the gravity duals are engineered in terms of probe branes (the so-called flavor brane) in the background of the color branes. Both types of branes intersect on a given subspace in which the matter is confined. The gauge theory dual is thus the corresponding flavoring of the gauge theory with 16 supercharges. Those theories have in general a nontrivial phase structure; which is also captured in a beautiful way by the gravity dual. Along the lines of the gauge/gravity duality, we review also some of the results on the meson spectrum in the different phases of the theories.

Download Full-text

Meson spectrum of Sp(4) lattice gauge theory with two fundamental Dirac fermions

10.22323/1.363.0054 ◽

2019 ◽

Author(s):

Jong-Wan Lee ◽

Ed Bennett ◽

Deog Ki Hong ◽

C.-J. David Lin ◽

Biagio Lucini ◽

...

Keyword(s):

Gauge Theory ◽

Lattice Gauge Theory ◽

Dirac Fermions ◽

Meson Spectrum ◽

Lattice Gauge

Download Full-text

MESON MASS AND CONFINEMENT FORCE DRIVEN BY DILATON

International Journal of Modern Physics D ◽

10.1142/s0218271806007651 ◽

2006 ◽

Vol 15 (01) ◽

pp. 57-67 ◽

Cited By ~ 24

Author(s):

IVER BREVIK ◽

KAZUO GHOROKU ◽

AKIHIRO NAKAMURA

Keyword(s):

Gauge Theory ◽

Meson Mass ◽

Meson Spectrum ◽

Hadron Spectrum ◽

Quark Confinement

Meson spectra given as fluctuations of a D7-brane are studied under the background driven by the dilaton. This leads to a dual gauge theory with quark confinement due to the gauge condensate. We find that the effect of the gauge condensate on the meson spectrum is essential in order to make a realistic hadron spectrum in the non-supersymmetric case. In the supersymmetric case, however, only the spectra of the scalars are affected, but they are changed in an opposite way compared to the non-supersymmetric case.

Download Full-text

Update on SU(2) gauge theory with NF = 2 fundamental flavours.

EPJ Web of Conferences ◽

10.1051/epjconf/201817508020 ◽

2018 ◽

Vol 175 ◽

pp. 08020 ◽

Cited By ~ 7

Author(s):

Vincent Drach ◽

Tadeusz Janowski ◽

Claudio Pica

Keyword(s):

Gauge Theory ◽

Standard Model ◽

Wide Class ◽

Minimal Realization ◽

Meson Spectrum ◽

Chiral Extrapolation ◽

Decay Constants ◽

Composite Higgs ◽

The Status

We present a non perturbative study of SU(2) gauge theory with two fundamental Dirac flavours. This theory provides a minimal template which is ideal for a wide class of Standard Model extensions featuring novel strong dynamics, such as a minimal realization of composite Higgs models. We present an update on the status of the meson spectrum and decay constants based on increased statistics on our existing ensembles and the inclusion of new ensembles with lighter pion masses, resulting in a more reliable chiral extrapolation. Preprint: CP3-Origins-2017-048 DNRF90

Download Full-text

Meson spectrum in the large N limit

Journal of High Energy Physics ◽

10.1007/jhep04(2021)230 ◽

2021 ◽

Vol 2021 (4) ◽

Author(s):

Margarita García Pérez ◽

Antonio González-Arroyo ◽

Masanori Okawa

Keyword(s):

Gauge Theory ◽

First Principles ◽

Decay Constant ◽

Lattice Gauge Theory ◽

Axial Vector ◽

String Tension ◽

Meson Spectrum ◽

Lattice Gauge ◽

Large N ◽

Pseudoscalar Decay Constant

Abstract We present the result of our computation of the lowest lying meson masses for SU(N) gauge theory in the large N limit (with Nf /N → 0). The final values are given in units of the square root of the string tension, and with errors which account for both statistical and systematic errors. By using 4 different values of the lattice spacing we have seen that our results scale properly. We have studied various values of N (169, 289 and 361) to monitor the N-dependence of the most sensitive quantities. Our methodology is based upon a first principles approach (lattice gauge theory) combined with large N volume independence. We employed both Wilson fermions and twisted mass fermions with maximal twist. In addition to masses in the pseudoscalar, vector, scalar and axial vector channels, we also give results on the pseudoscalar decay constant and various remormalization factors.

Download Full-text