a-theorem at large Nf

Antipin, Oleg (Rudjer Boskovic Institute, Division of Theoretical Physics, Bijenička 54, HR-10000 Zagreb, Croatia) ; Dondi, Nicola Andrea (CP3-Origins & Danish IAS, University of Southern Denmark, Campusvej 55, Odense M—DK-5230, Denmark) ; Sannino, Francesco (CP3-Origins & Danish IAS, University of Southern Denmark, Campusvej 55, Odense M—DK-5230, Denmark) ; Thomsen, Anders Eller (CP3-Origins & Danish IAS, University of Southern Denmark, Campusvej 55, Odense M—DK-5230, Denmark)

11 January 2019

Abstract: We determine the Jack and Osborn a-function and related metric for gauge-fermion theories to leading order in the large number of fermions and to all orders in the gauge coupling, demonstrating that the strong a-theorem is violated for the minimal choice of the a-function.


Published in: Physical Review D 99 (2019)
Published by: APS
DOI: 10.1103/PhysRevD.99.025004
arXiv: 1808.00482
License: CC-BY-4.0



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