On the exactness of soft theorems
dc.contributor.author | Guerrieri, Andrea L. [UNESP] | |
dc.contributor.author | Huang, Yu-tin | |
dc.contributor.author | Li, Zhizhong | |
dc.contributor.author | Wen, Congkao | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Chulalongkorn University | |
dc.contributor.institution | I.N.F.N. Sezione di Roma Tor Vergata | |
dc.contributor.institution | National Taiwan University | |
dc.contributor.institution | National Tsing-Hua University | |
dc.contributor.institution | California Institute of Technology | |
dc.contributor.institution | UCLA | |
dc.date.accessioned | 2018-12-11T17:16:58Z | |
dc.date.available | 2018-12-11T17:16:58Z | |
dc.date.issued | 2017-12-01 | |
dc.description.abstract | Soft behaviours of S-matrix for massless theories reflect the underlying symmetry principle that enforces its masslessness. As an expansion in soft momenta, sub-leading soft theorems can arise either due to (I) unique structure of the fundamental vertex or (II) presence of enhanced broken-symmetries. While the former is expected to be modified by infrared or ultraviolet divergences, the latter should remain exact to all orders in perturbation theory. Using current algebra, we clarify such distinction for spontaneously broken (super) Poincaré and (super) conformal symmetry. We compute the UV divergences of DBI, conformal DBI, and A-V theory to verify the exactness of type (II) soft theorems, while type (I) are shown to be broken and the soft-modifying higher-dimensional operators are identified. As further evidence for the exactness of type (II) soft theorems, we consider the α′ expansion of both super and bosonic open strings amplitudes, and verify the validity of the translation symmetry breaking soft-theorems up to O(α′6). Thus the massless S-matrix of string theory “knows” about the presence of D-branes. | en |
dc.description.affiliation | ICTP South American Institute for Fundamental Research IFT-UNESP, Rua Dr. Bento Teobaldo Ferraz 271, Bloco 2 — Barra Funda | |
dc.description.affiliation | Department of Physics Faculty of Science Chulalongkorn University, 254 Phayathai Road, Thanon, Phayathai, Pathumwan | |
dc.description.affiliation | I.N.F.N. Sezione di Roma Tor Vergata, Via della Ricerca Scientifica | |
dc.description.affiliation | Department of Physics and Astronomy National Taiwan University, No. 1 Sec. 4 Roosevelt Road | |
dc.description.affiliation | Physics Division National Center for Theoretical Sciences National Tsing-Hua University, No. 101, section 2, Kuang-Fu Road | |
dc.description.affiliation | Walter Burke Institute for Theoretical Physics California Institute of Technology, 1200 E California Blvd | |
dc.description.affiliation | Mani L. Bhaumik Institute for Theoretical Physics Department of Physics and Astronomy UCLA, 475 Portola Plaza | |
dc.description.affiliationUnesp | ICTP South American Institute for Fundamental Research IFT-UNESP, Rua Dr. Bento Teobaldo Ferraz 271, Bloco 2 — Barra Funda | |
dc.identifier | http://dx.doi.org/10.1007/JHEP12(2017)052 | |
dc.identifier.citation | Journal of High Energy Physics, v. 2017, n. 12, 2017. | |
dc.identifier.doi | 10.1007/JHEP12(2017)052 | |
dc.identifier.file | 2-s2.0-85038591932.pdf | |
dc.identifier.issn | 1029-8479 | |
dc.identifier.issn | 1126-6708 | |
dc.identifier.scopus | 2-s2.0-85038591932 | |
dc.identifier.uri | http://hdl.handle.net/11449/175664 | |
dc.language.iso | eng | |
dc.relation.ispartof | Journal of High Energy Physics | |
dc.relation.ispartofsjr | 1,227 | |
dc.relation.ispartofsjr | 1,227 | |
dc.rights.accessRights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Effective Field Theories | |
dc.subject | Scattering Amplitudes | |
dc.subject | Spontaneous Symmetry Breaking | |
dc.title | On the exactness of soft theorems | en |
dc.type | Artigo | |
dspace.entity.type | Publication | |
unesp.campus | Universidade Estadual Paulista (UNESP), Instituto de Física Teórica (IFT), São Paulo | pt |
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