000			01510nam a22002177a 4500
008			240531b |||||||| |||| 00| 0 eng d
041			_aeng
080			_aHBNI _bTh242
100			_aNishant Gupta _eauthor
245			_aAspects of Chiral Symmetries in Holography [HBNI Th242]
260			_aChennai _bThe Institute of Mathematical Sciences _c2024
300			_a229p.
502			_bPh.D _d2024
520			_aThis thesis explores the derivation of chiral current algebras from different gravita- tional theories, including R1,3 gravity, AdS4 gravity, and 3d conformal gravity. We propose chiral boundary conditions consistent with the variational principle for 4d asymptotically flat solutions yielding a chiral bms4 asymptotic symmetry algebra. This symmetry algebra was earlier discovered in the context of celestial conformal field theory. It is an infinite-dimensional chiral extension of the Poincaré algebra and includes a copy of Virasoro algebra, a copy of sl(2, R) current algebra, and a doublet of commuting currents with conformal weight h = 23 . Additionally, a novel non-chiral infinite-dimensional symmetry algebra for R1,3 gravity is introduced through alterna- tive non-chiral boundary conditions, considering the boundary metric in conformal gauge.
650			_aPhysics
653			_aSymmetries in Holography
690			_aPhysics
720			_aNemani V. Suryanarayana _eThesis Advisor [ths]
856			_uhttps://www.imsc.res.in/xmlui/handle/123456789/878
942			_cTHESIS
999			_c60384 _d60384