Holographic approach to finite temperature QCD: The case of scalar glueballs and scalar mesons

Journal Article · Sun Nov 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.094019· OSTI ID:21325478

Colangelo, Pietro; Giannuzzi, Floriana; Nicotri, Stefano ^[1]

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1. Istituto Nazionale di Fisica Nucleare, Sezione di Bari (Italy)

We study scalar glueballs and scalar mesons at T{ne}0 in the soft wall holographic QCD model. We find that, using the anti-de Sitter-black-hole metric for all values of the temperature, the masses of the hadronic states decrease and the widths become broader when T increases, and there are temperatures for which the states disappear from the scalar glueball and scalar meson spectral functions. However, the values of the temperatures in correspondence of which such phenomena occur are low, of the order of 40-60 MeV. A consistent holographic description of in-medium effects on hadron properties should include the Hawking-Page transition, which separates the phase with the anti-de Sitter metric at small temperatures from the phase with anti-de Sitter-black-hole metric at high temperatures.

• OSTI ID: 21325478
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI DE SITTER SPACE
BLACK HOLES
GLUEBALLS
HOLOGRAPHY
MASS
METRICS
MEV RANGE 10-100
QUANTUM CHROMODYNAMICS
SCALAR MESONS
SPECTRAL FUNCTIONS