Imperial College London
Alternate

ProfessorArkadyTseytlin

Faculty of Natural Sciences, Department of Physics

Professor of Theoretical Physics
 
 
 
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Contact

 

+44 (0)20 7594 1890a.tseytlin Website

 
 
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Location

 

685Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Beccaria:2015:10.1007/JHEP09(2015)017,
author = {Beccaria, M and Tseytlin, AA},
doi = {10.1007/JHEP09(2015)017},
journal = {Journal of High Energy Physics},
title = {Conformal a-anomaly of some non-unitary 6d superconformal theories},
url = {http://dx.doi.org/10.1007/JHEP09(2015)017},
volume = {2015},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We compute the conformal anomaly a-coefficient for some non-unitary (higherderivative or non-gauge-invariant) 6d conformal fields and their supermultiplets. Weuse the method based on a connection between 6d determinants on S6 and 7d determinantson AdS7. We find, in particular, that (1,0) supermultiplet containing 4-derivativegauge-invariant conformal vector has precisely the value of a-anomaly as attributed inarXiv:1506.03807 (on the basis of R-symmetry and gravitational ’t Hooft anomaly matching)to the standard (1,0) vector multiplet. We also show that higher derivative (2,0)6d conformal supergravity coupled to exactly 26 (2,0) tensor multiplets has vanishing aanomaly(and also vanishing Casimir energy on 5-sphere). This is the 6d counterpart of theknown fact of cancellation of the conformal anomaly in the 4d system of N = 4 conformalsupergravity coupled to 4 vector N = 4 multiplets. In the case when 5 of tensor multipletsare chosen to be ghost-like and the conformal symmetry is spontaneously broken bya quadratic scalar constraint the resulting IR theory may be identified with (2,0) Poincar´esupergravity coupled to 21 = 26 − 5 tensor multiplets. The latter theory is known to bespecial — it is gravitational anomaly free and results upon compactification of 10d typeIIB supergravity on K3
AU  - Beccaria,M
AU  - Tseytlin,AA
DO  - 10.1007/JHEP09(2015)017
PY  - 2015///
SN  - 1029-8479
TI  - Conformal a-anomaly of some non-unitary 6d superconformal theories
T2  - Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/JHEP09(2015)017
UR  - http://hdl.handle.net/10044/1/52786
VL  - 2015
ER  -
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