May 26 – 31, 2024
Western University
America/Toronto timezone
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(G) Lagrangian partition functions subject to a fixed spatial volume constraint in the Lovelock theory

May 31, 2024, 11:30 AM
15m
SSC Rm 2028 (cap. 135) (Social Science Centre, Western U.)

SSC Rm 2028 (cap. 135)

Social Science Centre, Western U.

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle) Theoretical Physics / Physique théorique (DTP-DPT) (DTP) F2-2 Classical and Quantum Gravity | Gravité classique et quantique (DPT)

Speaker

Mengqi Lu

Description

We generalize the main result of 1 to Lovelock theory. We find there exists sphere saddle metrics for a partition function at a fixed spatial volume in Lovelock theory. Those stationary points take exactly the same forms as in 1. The logarithm of $Z$ corresponding to a zero effective cosmological constant indicates the Bakenstein-Hawking entropy of the boundary area and the one corresponding to a positive effective cosmological constant points to the Wald entropy of the boundary area. We also find zeroth order phase transitions between different vacua.https://arxiv.org/abs/2212.10607

Keyword-1 Partition function
Keyword-2 Entropy
Keyword-3 Lovelock theory

Authors

Mengqi Lu Robert Mann

Presentation materials

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