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Indications of a nontrivial vacuum in the effective theory of perfect fluids

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Author(s):
Burch, Tommy ; Torrieri, Giorgio ; LSS Collaboration
Total Authors: 3
Document type: Journal article
Source: PHYSICAL REVIEW D; v. 92, n. 1, p. 10-pg., 2015-07-30.
Abstract

Using lattice field theory techniques, we investigate the vacuum structure of the field theory corresponding to perfect fluid dynamics in the Lagrangian prescription. We find intriguing, but inconclusive evidence, that the vacuum of such a theory is nontrivial, casting doubts on whether the gradient expansion can provide a good effective field theory for this type of system. The nontrivial vacuum looks like a "turbulent" state where some of the entropy is carried by macroscopic degrees of freedom. We describe further steps to strengthen or falsify this evidence. (AU)

FAPESP's process: 14/13120-7 - Scaling of azimuthal correlations in hadronic collisions across system sizes, energies and rapidities: theory and phenomenology
Grantee:Donato Giorgio Torrieri
Support Opportunities: Regular Research Grants