ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Discontinuities of free theories on AdS 2

David, JR and Gava, E and Gupta, RK and Narain, KS (2023) Discontinuities of free theories on AdS 2. In: Journal of High Energy Physics, 2023 (9).

jou_hig_ene_phy_2023-9_2023.pdf - Published Version

Download (3MB) | Preview
Official URL: https://doi.org/10.1007/JHEP09(2023)171


The partition functions of free bosons as well as fermions on AdS 2 are not smooth as a function of their masses. For free bosons, the partition function on AdS 2 is not smooth when the mass saturates the Breitenlohner-Freedman bound. We show that the expectation value of the scalar bilinear on AdS 2 exhibits a kink at the BF bound and the change in slope of the expectation value with respect to the mass is proportional to the inverse radius of AdS 2. For free fermions, when the mass vanishes the partition function exhibits a kink. We show that expectation value of the fermion bilinear is discontinuous and the jump in the expectation value is proportional to the inverse radius of AdS 2. We then show the supersymmetric actions of the chiral multiplet on AdS 2 × S 1 and the hypermultiplet on AdS 2 × S 2 demonstrate these features. The supersymmetric backgrounds are such that as the ratio of the radius of AdS 2 to S 1 or S 2 is dialled, the partition functions as well as expectation of bilinears are not smooth for each Kaluza-Klein mode on S 1 or S 2. Our observation is relevant for evaluating one-loop partition function in the near horizon geometry of extremal black holes. © 2023, The Author(s).

Item Type: Journal Article
Publication: Journal of High Energy Physics
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Extended Supersymmetry, Supersymmetric Gauge Theory
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 17 Dec 2023 07:55
Last Modified: 17 Dec 2023 07:55
URI: https://eprints.iisc.ac.in/id/eprint/83440

Actions (login required)

View Item View Item