Light-Front Holography and Hadronization at the Amplitude Level

Journal Article · Mon Oct 13 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3013071· OSTI ID:21251479

Brodsky, Stanley J ^[1]; Teramond, Guy F. de ^[2]; Shrock, Robert ^[3]

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1. Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309 (United States) and the Institute for Particle Physics and Phenomenology, Durham (United Kingdom)
2. Universidad de Costa Rica, San Jose (Costa Rica)
3. C.N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, NY 11794 (United States)

The correspondence between theories in anti-de Sitter space and conformal field theories in physical space-time leads to an analytic, semiclassical model for strongly-coupled QCD which has scale invariance at short distances and color confinement at large distances. Light-front holography is a remarkable feature of AdS/CFT: it allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. Some novel features of QCD are discussed, including the consequences of confinement for quark and gluon condensates and the behavior of the QCD coupling in the infrared. We suggest that the spatial support of QCD condensates is restricted to the interior of hadrons, since they arise due to the interactions of confined quarks and gluons. Chiral symmetry is thus broken in a limited domain of size 1/m{sub {pi}}, in analogy to the limited physical extent of superconductor phases. A new method for computing the hadronization of quark and gluon jets at the amplitude level, an event amplitude generator, is outlined.

• OSTI ID: 21251479
• Journal Information: AIP Conference Proceedings, Vol. 1056, Issue 1; Conference: 6. international conference on perspectives in hadronic physics, Trieste (Italy), 12-16 May 2008; Other Information: DOI: 10.1063/1.3013071; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI DE SITTER SPACE
BAG MODEL
CHIRAL SYMMETRY
COLOR MODEL
CONFORMAL INVARIANCE
GLUON CONDENSATION
GLUONS
HADRONS
HOLOGRAPHY
QUANTUM CHROMODYNAMICS
QUARK-GLUON INTERACTIONS
QUARKS
RELATIVISTIC RANGE
SCALE INVARIANCE
SEMICLASSICAL APPROXIMATION
SPACE-TIME
SYMMETRY BREAKING
WAVE FUNCTIONS