What’s new at small x?

Venugopalan, Raju

doi:10.1007/s12043-000-0085-2

Cited by 2 publications

(3 citation statements)

References 54 publications

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“…The approach described here is by no means the only approach. For a review of the recent status of different approaches to small x physics, see Ref [6]3.…”

mentioning

confidence: 99%

Small x physics and the initial conditions in heavy ion collisions

Krasnitz¹,

Venugopalan²

2002

Nuclear Physics A

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At very high energies, the high parton densities (characterized by a semi-hard saturation scale Λ s ) ensure that parton distributions can be described by a classical effective field theory with remarkable properties analogous to those of spin glass systems. This color glass condensate (CGC) of gluons also provides the initial conditions for multi-particle production in high energy nuclear collisions. In this talk, we briefly summarize recent theoretical and phenomenological progress in the CGC approach to small x physics. In particular, we discuss recent numerical work on the real time gluodynamics of partons after a nuclear collision. The implications of this work for the theoretical study of thermalization in nuclear collisions and on the phenomenological interpretation of results of the recent RHIC experiments are also discussed.

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“…The approach described here is by no means the only approach. For a review of the recent status of different approaches to small x physics, see Ref [6]3.…”

mentioning

confidence: 99%

Small x physics and the initial conditions in heavy ion collisions

Krasnitz¹,

Venugopalan²

2002

Nuclear Physics A

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“…Particularly important are the "wee" parton distributions in nuclei, which are virtual excitations of the nuclear ground state (mostly gluons) carrying a small fraction x of the longitudinal momentum of each colliding nucleus. 4 Large energy s and momentum transfer Q 2 but small x ∝ Q 2 /s is the regime of high virtual gluon densities. Perturbative QCD evolution predicts rapid growth in the gluon distribution as x → 0, but eventually gluon recombination and screening effects should become important.…”

Section: Many-body Physics At Small Xmentioning

confidence: 99%

“…An important question is whether the gluon density saturates and at what scale. 4 The large occupation number of gluon states implies that a classical effective field theory (EFT) is a good starting point, with corrections from a nonlinear renormalization group analysis. The characteristic energy scale at RHIC and planned future accelerators is high enough that the effective coupling is weak, although the physics is nonperturbative.…”

Section: Many-body Physics At Small Xmentioning

confidence: 99%

Recent Developments in the Nuclear Many-Body Problem

Furnstahl

2003

Int. J. Mod. Phys. B

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The study of quantum chromodynamics (QCD) over the past quarter century has had relatively little impact on the traditional approach to the low-energy nuclear many-body problem. Recent developments are changing this situation. New experimental capabilities and theoretical approaches are opening windows into the richness of many-body phenomena in QCD. A common theme is the use of effective field theory (EFT) methods, which exploit the separation of scales in physical systems. At low energies, effective field theory can explain how existing phenomenology emerges from QCD and how to refine it systematically. More generally, the application of EFT methods to many-body problems promises insight into the analytic structure of observables, the identification of new expansion parameters, and a consistent organisation of many-body corrections, with reliable error estimates.

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What’s new at small x?

Abstract: We discuss some recent developments in small Ü physics.

Cited by 2 publications

References 54 publications

Small x physics and the initial conditions in heavy ion collisions

Small x physics and the initial conditions in heavy ion collisions

Recent Developments in the Nuclear Many-Body Problem

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