Connections between string theory and gauge theory via scattering amplitudes

• Grant number: 12/05451-8
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Effective date (Start): September 01, 2012
• Effective date (End): August 31, 2016
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Horatiu Stefan Nastase
• Grantee: Francisco Javier Rojas Fernandez
• Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
• Associated scholarship(s): 14/17363-1 - Soft theorems, scattering equations and quantum loops in AdS2, BE.EP.PD

Abstract

We intend to study several relations between string theory and gauge theory from the point of view of scattering amplitudes. We have nonperturbative relations, using the AdS/CFT correspondence, perturbative (weak-weak) relations, related to amplitudes of open vs. closed strings, and perturbative information obtained from the alpha' to zero limit of string theory. The Alday-Maldacena construction revealed dual conformal symmetry and interesting structures of gluon amplitude that will be explored. The scattering of colorless objects in QCD is addressed using perturbative methods (resummation of string diagrams) and nonperturbative methods (AdS/CFT) methods. The scattering of open strings needs a regulator for tadpole cancellation conditions, a result that can shed light on the quantum Regge trajectory. The scattering of gluons in N=4 SYM and gravitons in N=8 supergravity are related, both at the tree level (KLT relations) and at the loop integrand level (the BCJ conjecture), and we will study possible extensions to N=0,1,2,4 SYM and N=4,5,6,8 supergravity and n-points. (AU)

Scientific publications

(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

KALOUSIOS, CHRYSOSTOMOS; ROJAS, FRANCISCO. Next to subleading soft-graviton theorem in arbitrary dimensions. Journal of High Energy Physics, n. 1, JAN 21 2015. (12/05451-8, 11/11973-4)

PUHM, ANDREA; ROJAS, FRANCISCO; UGAJIN, TOMONORI. (Non-adiabatic) string creation on nice slices in Schwarzschild black holes. Journal of High Energy Physics, n. 4, APR 27 2017. (14/17363-1, 12/05451-8)

LOPEZ-ARCOS, CRISTHIAM; NASTASE, HORATIU; ROJAS, FRANCISCO; MURUGAN, JEFF. Conductivity in the gravity dual to massive ABJM and the membrane paradigm. Journal of High Energy Physics, n. 1, JAN 9 2014. (12/05451-8)

LOPEZ-ARCOS, CRISTHIAM; NASTASE, HORATIU; ROJAS, FRANCISCO; MURUGAN, JEFF. Conductivity in the gravity dual to massive ABJM and the membrane paradigm. Journal of High Energy Physics, v. N/A, n. 1, p. 27-pg., 2014-01-09. (12/05451-8)

ROJAS, FRANCISCO. Type 0 open string amplitudes and the tensionless limit. Physical Review D, v. 90, n. 12, p. 30-pg., 2014-12-16. (12/05451-8)

KALOUSIOS, CHRYSOSTOMOS; ROJAS, FRANCISCO. Next to subleading soft-graviton theorem in arbitrary dimensions. Journal of High Energy Physics, v. N/A, n. 1, p. 16-pg., 2015-01-21. (11/11973-4, 12/05451-8)

PUHM, ANDREA; ROJAS, FRANCISCO; UGAJIN, TOMONORI. (Non-adiabatic) string creation on nice slices in Schwarzschild black holes. Journal of High Energy Physics, v. N/A, n. 4, p. 31-pg., 2017-04-27. (14/17363-1, 12/05451-8)