Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Miguel S. Costa"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 9, Pp 1-49 (2023)
Abstract We propose and explore the Regge limit for correlation functions of five local primary operators in conformal field theories. After reviewing some features of Regge theory for flat-space scattering amplitudes, we analyze the analytic structu
Externí odkaz:
https://doaj.org/article/52d2699d88364142ab9c87840f27ada9
Publikováno v:
Physics Letters B, Vol 846, Iss , Pp 138225- (2023)
The modern S-Matrix Bootstrap provides non-perturbative bounds on low-energy aspects of scattering amplitudes, leveraging the constraints of unitarity, analyticity and crossing. Typically, the solutions saturating such bounds also saturate the unitar
Externí odkaz:
https://doaj.org/article/d07ec367aed74403bc2b7fa4b4a98e04
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-57 (2022)
Abstract Higher-point functions of scalar operators are a rich observable in CFTs, as they contain OPE data involving multiple spinning operators. We derive the lightcone blocks for five- and six-point functions in the snowflake channel and use them
Externí odkaz:
https://doaj.org/article/29222572a676480bbfec24894044832b
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-64 (2021)
Abstract The boundary correlation functions for a Quantum Field Theory (QFT) in an Anti-de Sitter (AdS) background can stay conformally covariant even if the bulk theory undergoes a renormalization group (RG) flow. Studying such correlation functions
Externí odkaz:
https://doaj.org/article/f72c4a8ddb6541a5be92461b162a4724
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-48 (2021)
Abstract We initiate the study of Regge theory in a bottom-up holographic model for QCD in the Veneziano limit, where the backreaction of the quarks to the gluon dynamics is included. We determine the parameters of the model by carrying out a precise
Externí odkaz:
https://doaj.org/article/9028251f79c240959cd8103e03fd0550
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-69 (2021)
Abstract We derive an optical theorem for perturbative CFTs which computes the double discontinuity of conformal correlators from the single discontinuities of lower order correlators, in analogy with the optical theorem for flat space scattering amp
Externí odkaz:
https://doaj.org/article/2afd6b16f45341838a2ff8853120f249
Publikováno v:
Physics Letters B, Vol 819, Iss , Pp 136451- (2021)
We present our current progress in the holographic computation of the scattering amplitude for Deeply Virtual Compton Scattering (DVCS) processes, as a function of the Mandelstam invariant t. We show that it is possible to describe simultaneously the
Externí odkaz:
https://doaj.org/article/89b3e0d367f04f038efc1995fc48cfc5
Autor:
Miguel S. Costa, Tobias Hansen
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 9, Pp 1-58 (2018)
Abstract We construct a new class of differential operators that naturally act on AdS harmonic functions. These are weight shifting operators that change the spin and dimension of AdS representations. Together with CFT weight shifting operators, the
Externí odkaz:
https://doaj.org/article/72117e1d73dc475083decc96f3e3babf
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-46 (2017)
Abstract We consider the Regge limit of the CFT correlation functions JJOO $$ \left\langle \mathcal{JJOO}\right\rangle $$ and T T O O $$ \left\langle TT\mathcal{O}\mathcal{O}\right\rangle $$ , where J $$ \mathcal{J} $$ is a vector current, T is the s
Externí odkaz:
https://doaj.org/article/14d88deffa5c4270b4df9ffd73421723
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 8, Pp 1-32 (2017)
Abstract We develop a formalism where the hard and soft pomeron contributions to high energy scattering arise as leading Regge poles of a single kernel in holographic QCD. The kernel is obtained using effective field theory inspired by Regge theory o
Externí odkaz:
https://doaj.org/article/49526f9d394a4e2da7c4ad44f309ff0d