Particle theory

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Big bang nucleosynthesis limit on N_nu

(1999)

Authors:

E Lisi, Subir Sarkar, FL Villante
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Five--Branes and Supersymmetry Breaking in M--Theory

(1999)

Authors:

Andre Lukas, Burt A Ovrut, Daniel Waldram
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Holomorphic Vector Bundles and Non-Perturbative Vacua in M-Theory

(1999)

Authors:

Ron Donagi, Andre Lukas, Burt A Ovrut, Daniel Waldram
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Chiral symmetry breaking, instantons and the ultimate quenched calculation

Nuclear Physics B - Proceedings Supplements 73:1-3 (1999) 617-619

Authors:

U Sharan, M Teper

Abstract:

We calculate the spectral density of the Dirac operator over an ensemble of configurations composed of overlapping instantons and anti-instantons. We find evidence that the spectral density diverges in the limit λ → 0. This indicates the breaking of chiral symmetry and also provides evidence that quenched QCD may be pathological in nature.
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Distinguishing J=4 from J=0 on a cubic lattice

Nuclear Physics B - Proceedings Supplements 73:1-3 (1999) 267-269

Authors:

R Johnson, M Teper
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