Linear response of entanglement entropy to $T\bar{T}$ in massive QFTs

• Main Authors: Ashkenazi, Shachar, Chakraborty, Soumangsu, Ma, Zhanyu, Shachar, Tom
• Format: Journal Article
• Language: English
• Published: 13-02-2023
• Subjects: Physics - High Energy Physics - Theory
• DOI: 10.48550/arxiv.2302.06688

We compute the leading correction to entanglement entropy in $T\bar{T}$
deformed massive QFTs. We show that both for massive scalar and Dirac fermion,
the leading order correction to the entanglement entropy of half-space comes
from the boundary of the entangling surface. For the case of massive scalar,
the boundary term is finite while for massive fermion, it diverges
logarithmically giving rise to an additional log-square divergence in the
entanglement entropy.