Real time quantum gravity dynamics from classical statistical Yang-Mills simulations

Journal Article · 25 January 2019 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/jhep01(2019)201 · OSTI ID:1612779

Hanada, Masanori ^[1]; Romatschke, Paul ^[2]

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1. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics; DOE/OSTI
2. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics, and Center for Theory of Quantum Matter

We perform microcanonical classical statistical lattice simulations of SU(N) Yang-Mills theory with eight scalars on a circle. Measuring the eigenvalue distribution of the spatial Wilson loop we find two distinct phases depending on the total energy and circle radius, which we tentatively interpret as corresponding to black hole and black string phases in a dual gravity picture. We proceed to study quenches by first preparing the system in one phase, rapidly changing the total energy, and monitoring the real-time system response. We observe that the system relaxes to the equilibrium phase corresponding to the new energy, in the process exhibiting characteristic damped oscillations. We interpret this as the topology change from black hole to black string configurations, with damped oscillations corresponding to quasi-normal mode ringing of the black hole/black string final state. This would suggest that α′ corrections alone can resolve the singularity associated with the topology change. We extract the real and imaginary part of the lowest-lying presumptive quasinormal mode as a function of energy and N.

• Research Organization: Univ. of Colorado, Boulder, CO (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: SC0017905
• OSTI ID: 1612779
• Journal Information: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 1 Vol. 2019; ISSN 1029-8479
• Publisher: Springer BerlinCopyright Statement
• Country of Publication: United States
• Language: English