M
Miguel S. Costa
Researcher at University of Porto
Publications - 120
Citations - 6633
Miguel S. Costa is an academic researcher from University of Porto. The author has contributed to research in topics: Graviton & Pomeron. The author has an hindex of 37, co-authored 118 publications receiving 6078 citations. Previous affiliations of Miguel S. Costa include Princeton University & CERN.
Papers
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Spinning conformal correlators
TL;DR: The embedding formalism for conformal field theories is developed, aimed at doing computations with symmetric traceless operators of arbitrary spin, using an indexfree notation where tensors are encoded by polynomials in auxiliary polarization vectors.
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Conformal Regge theory
Miguel S. Costa,Miguel S. Costa,Vasco Goncalves,Vasco Goncalves,Joao Penedones,Joao Penedones +5 more
TL;DR: In this article, a conformal partial wave expansion in Mellin space is proposed for the case of four point correlation functions between protected scalar operators in Super Yang Mills, in cases where the Regge limit is controlled by the leading twist operators associated to the pomeron-graviton Regge trajectory.
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A New cosmological scenario in string theory
Lorenzo Cornalba,Miguel S. Costa +1 more
TL;DR: In this paper, the modular invariant one-loop partition function is computed for a two-dimensional cosmological model with a collapsing, an intermediate and an expanding phase, where the boundary between the collapsing phase and the intermediate phase is seen by comoving observers as a cosmologically past horizon.
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Spinning Conformal Blocks
TL;DR: For conformal field theories in arbitrary dimensions, this paper introduced a method to derive the conformal blocks corresponding to the exchange of a traceless symmetric tensor appearing in four point functions of operators with spin.
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Eikonal approximation in AdS/CFT: resumming the gravitational loop expansion
TL;DR: In this article, an eikonal approximation to high energy interactions in anti-de Sitter spacetime was derived by generalizing a position space derivation of the amplitude in flat space.