Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Nima Afkhami-Jeddi"'
Autor:
Nima Afkhami-Jeddi
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-24 (2022)
Abstract We explore the space of extremal functionals in the conformal bootstrap. By recasting the bootstrap problem as a set of non-linear equations parameterized by the CFT data, we find an efficient algorithm for converging to the extremal solutio
Externí odkaz:
https://doaj.org/article/ba7944df39724b879e43433360402b42
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-33 (2022)
Abstract Using numerical methods for finding Ricci-flat metrics, we explore the spectrum of local operators in two-dimensional conformal field theories defined by sigma models on Calabi-Yau targets at large volume. Focusing on the examples of K3 and
Externí odkaz:
https://doaj.org/article/fb9add8f18ec4ac4aeb02e895e156e48
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 1, Pp 1-43 (2021)
Abstract We study the torus partition functions of free bosonic CFTs in two dimensions. Integrating over Narain moduli defines an ensemble-averaged free CFT. We calculate the averaged partition function and show that it can be reinterpreted as a sum
Externí odkaz:
https://doaj.org/article/c2daf04e656b48ee95f1b0bbd98092f8
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 12, Pp 1-45 (2020)
Abstract We carry out a numerical study of the spinless modular bootstrap for conformal field theories with current algebra U(1) c × U(1) c , or equivalently the linear programming bound for sphere packing in 2c dimensions. We give a more detailed p
Externí odkaz:
https://doaj.org/article/9d763599d85649529b542ad34a3e7af8
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 5, Pp 1-25 (2019)
Abstract The crossing equations of a conformal field theory can be systematically truncated to a finite, closed system of polynomial equations. In certain cases, solutions of the truncated equations place strict bounds on the space of all unitary CFT
Externí odkaz:
https://doaj.org/article/7cd0ab0254304fa1a3bf1374f135e93f
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 4, Pp 1-58 (2019)
Abstract According to common lore, massive elementary higher spin particles lead to inconsistencies when coupled to gravity. However, this scenario was not completely ruled out by previous arguments. In this paper, we show that in a theory where the
Externí odkaz:
https://doaj.org/article/f39ab3d65d3c4f0ab1420d1a76f046a5
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 3, Pp 1-47 (2019)
Abstract We clarify and further explore the CFT dual of shockwave geometries in Anti-de Sitter. The shockwave is dual to a CFT state produced by a heavy local operator inserted at a complex point. It can also be created by light operators, smeared ov
Externí odkaz:
https://doaj.org/article/ddcc6fb1e6b14d43a8355e2f160057f3
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-50 (2018)
Abstract We develop a formalism to study the implications of causality on OPE coefficients in conformal field theories with large central charge and a sparse spectrum of higher spin operators. The formalism has the interpretation of a new conformal c
Externí odkaz:
https://doaj.org/article/afe7422e29bb4ee8ac8b0a1cee0e86e7
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 5, Pp 1-31 (2018)
Abstract We derive constraints on two-dimensional conformal field theories with higher spin symmetry due to unitarity, modular invariance, and causality. We focus on CFTs with WN $$ {\mathcal{W}}_N $$ symmetry in the “irrational” regime, where c
Externí odkaz:
https://doaj.org/article/249d5a42acd74ebfa759d6cd883815be
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 12, Pp 1-27 (2017)
Abstract We study stress tensor correlation functions in four-dimensional conformal field theories with large N and a sparse spectrum. Theories in this class are expected to have local holographic duals, so effective field theory in anti-de Sitter su
Externí odkaz:
https://doaj.org/article/9e900d3f71b84d5ab2b899fc4c2a7f90