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pro vyhledávání: '"Nohle, Josh"'
Autor:
Johansson, Henrik, Nohle, Josh
We use the duality between color and kinematics to obtain scattering amplitudes in non-minimal conformal N=0,1,2,4 (super)gravity theories. Generic tree amplitudes can be constructed from a double copy between (super-)Yang-Mills theory and a new gaug
Externí odkaz:
http://arxiv.org/abs/1707.02965
Publikováno v:
Phys. Rev. D 93, 085015 (2016)
We study the soft behavior of two seemingly different particles that are both referred to as dilatons in the literature, namely the one that appears in theories of gravity and in string theory and the Nambu-Goldstone boson of spontaneously broken con
Externí odkaz:
http://arxiv.org/abs/1512.03316
Publikováno v:
Phys. Rev. D 93, 105015 (2016)
The duality between color and kinematics enables the construction of multiloop gravity integrands directly from corresponding gauge-theory integrands. This has led to new nontrivial insights into the structure of gravity theories, including the disco
Externí odkaz:
http://arxiv.org/abs/1510.03448
Publikováno v:
Phys. Rev. Lett. 115, 211301 (2015)
Evanescent operators such as the Gauss-Bonnet term have vanishing perturbative matrix elements in exactly D=4 dimensions. Similarly, evanescent fields do not propagate in D=4; a three-form field is in this class, since it is dual to a cosmological-co
Externí odkaz:
http://arxiv.org/abs/1507.06118
Publikováno v:
Phys. Rev. D 90, 084035 (2014)
We show that at tree level, on-shell gauge invariance can be used to fully determine the first subleading soft-gluon behavior and the first two subleading soft-graviton behaviors. Our proofs of the behaviors for n-gluon and n-graviton tree amplitudes
Externí odkaz:
http://arxiv.org/abs/1406.6987
Publikováno v:
Phys. Rev. D 90, 085015 (2014)
Cachazo and Strominger recently proposed an extension of the soft-graviton theorem found by Weinberg. In addition, they proved the validity of their extension at tree level. This was motivated by a Virasoro symmetry of the gravity S-matrix related to
Externí odkaz:
http://arxiv.org/abs/1405.1015
Autor:
Nohle, Josh
Publikováno v:
Phys. Rev. D 90, 025020 (2014)
Four-point one-loop nonsupersymmetric pure Yang-Mills amplitudes with the duality between color and kinematics manifest have been constructed in previous work. Here, we extend the discussion to fermions and scalars circulating in the loop with all ex
Externí odkaz:
http://arxiv.org/abs/1309.7416
Publikováno v:
Phys. Rev. D 92, 045041 (2015)
We provide evidence in favor of the conjectured duality between color and kinematics for the case of nonsupersymmetric pure Yang-Mills amplitudes by constructing a form of the one-loop four-point amplitude of this theory that makes the duality manife
Externí odkaz:
http://arxiv.org/abs/1303.6605
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Akademický článek
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