Residual Local Supersymmetry and the Soft Gravitino

Avery, S.; Schwab, B.

doi:10.1103/physrevlett.116.171601

Cited by 47 publications

(55 citation statements)

References 47 publications

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“…It therefore provides a simple demonstration of the convolution structure which will appear at subleading powers. At the amplitude level, fermionic soft theorems in supersymmetric field theories and supergravity, and their relation to asymptotic symmetries have been considered [111][112][113][114]. At the cross section level soft quarks were found to give a leading logarithmic contribution to B-physics process [9] and event shape observables [40][41][42].…”

Section: Soft Quark Emissionmentioning

confidence: 99%

Subleading power factorization with radiative functions

Moult

Stewart

Vita

2019

J. High Energ. Phys.

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The study of amplitudes and cross sections in the soft and collinear limits allows for an understanding of their all orders behavior, and the identification of universal structures. At leading power soft emissions are eikonal, and described by Wilson lines. Beyond leading power the eikonal approximation breaks down, soft fermions must be added, and soft radiation resolves the nature of the energetic partons from which they were emitted. For both subleading power soft gluon and quark emissions, we use the soft collinear effective theory (SCET) to derive an all orders gauge invariant bare factorization, at both amplitude and cross section level. This yields universal multilocal matrix elements, which we refer to as radiative functions. These appear from subleading power Lagrangians inserted along the lightcone which dress the leading power Wilson lines. The use of SCET enables us to determine the complete set of radiative functions that appear to O(λ 2 ) in the power expansion, to all orders in α s . For the particular case of event shape observables in e + e − → dijets we derive how the radiative functions contribute to the factorized cross section to O(λ 2 ).

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Section: Soft Quark Emissionmentioning

confidence: 99%

Subleading power factorization with radiative functions

Moult

Stewart

Vita

2019

J. High Energ. Phys.

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“…Over the last few years it has been found [1][2][3][4][5][6][7][8][9][10][11][12][13][14] that empty space is a richer place than was previously believed. 1 Even the classical Minkowskian vacuum, far from being a unique, featureless configuration, is infinitely degenerate in all electromagnetic, Yang-Mills and gravitational theories.…”

Section: Introductionmentioning

confidence: 99%

Superrotation charge and supertranslation hair on black holes

Hawking

Perry

Strominger

2017

J. High Energ. Phys.

309

503

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It is shown that black hole spacetimes in classical Einstein gravity are characterized by, in addition to their ADM mass M , momentum P , angular momentum J and boost charge K, an infinite head of supertranslation hair. The distinct black holes are distinguished by classical superrotation charges measured at infinity. Solutions with supertranslation hair are diffeomorphic to the Schwarzschild spacetime, but the diffeomorphisms are part of the BMS subgroup and act nontrivially on the physical phase space. It is shown that a black hole can be supertranslated by throwing in an asymmetric shock wave. A leading-order Bondi-gauge expression is derived for the linearized horizon supertranslation charge and shown to generate, via the Dirac bracket, supertranslations on the linearized phase space of gravitational excitations of the horizon. The considerations of this paper are largely classical augmented by comments on their implications for the quantum theory.

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“…Further extensions of the BMS and Galilean Virasoro algebras have also been considered. In particular, supersymmetric extensions already appeared in [40,41] and have been discussed more recently in [42][43][44][45][46][47][48][49][50][51][52][53][54][55][56]. Also related to higher-spin theories, the Galilean Virasoro algebra has been extended by adding two spin-3 generators, resulting in a higher-spin BMS 3 algebra or a Galilean W 3 algebra [57][58][59].…”

Section: Introductionmentioning

confidence: 99%

Galilean contractions of W -algebras

Rasmussen

Raymond

2017

Nuclear Physics B

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Infinite-dimensional Galilean conformal algebras can be constructed by contracting pairs of symmetry algebras in conformal field theory, such as W -algebras. Known examples include contractions of pairs of the Virasoro algebra, its N = 1 superconformal extension, or the W 3 algebra. Here, we introduce a contraction prescription of the corresponding operator-product algebras, or equivalently, a prescription for contracting tensor products of vertex algebras. With this, we work out the Galilean conformal algebras arising from contractions of N = 2 and N = 4 superconformal algebras as well as of the W -algebras W (2, 4), W (2, 6), W 4 , and W 5 . The latter results provide evidence for the existence of a whole new class of W -algebras which we call Galilean W -algebras. We also apply the contraction prescription to affine Lie algebras and find that the ensuing Galilean affine algebras admit a Sugawara construction. The corresponding central charge is level-independent and given by twice the dimension of the underlying finite-dimensional Lie algebra. Finally, applications of our results to the characterisation of structure constants in W -algebras are proposed.

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Residual Local Supersymmetry and the Soft Gravitino

Cited by 47 publications

References 47 publications

Subleading power factorization with radiative functions

Subleading power factorization with radiative functions

Superrotation charge and supertranslation hair on black holes

Galilean contractions of W -algebras

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