Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Mathys, Grégoire"'
Massless spinning correlators in cosmology are extremely complicated. In contrast, the scattering amplitudes of massless particles with spin are very simple. We propose that the reason for the unreasonable complexity of these correlators lies in the
Externí odkaz:
http://arxiv.org/abs/2408.02727
Autor:
Hartman, Thomas, Mathys, Grégoire
In a four-dimensional quantum field theory that flows between two fixed points under the renormalization group, the change in the conformal anomaly $\Delta a$ has been related to the average null energy. We extend this result to derive a sum rule for
Externí odkaz:
http://arxiv.org/abs/2405.10137
We explore the physics of relativistic gapless phases defined by a mixed anomaly between two generalized conserved currents. The gapless modes can be understood as Goldstone modes arising from the nonlinear realization of (generically higher-form) sy
Externí odkaz:
http://arxiv.org/abs/2403.03256
Autor:
Hartman, Thomas, Mathys, Grégoire
We study applications of spectral positivity and the averaged null energy condition (ANEC) to renormalization group (RG) flows in two-dimensional quantum field theory. We find a succinct new proof of the Zamolodchikov $c$-theorem, and derive further
Externí odkaz:
http://arxiv.org/abs/2310.15217
Autor:
Hartman, Thomas, Mathys, Grégoire
We establish a connection between the averaged null energy condition (ANEC) and the monotonicity of the renormalization group, by studying the light-ray operator $\int du T_{uu}$ in quantum field theories that flow between two conformal fixed points.
Externí odkaz:
http://arxiv.org/abs/2309.14409
We study effective field theories (EFTs) enjoying (maximal) biform symmetries. These are defined by the presence of a conserved (electric) current that has the symmetries of a Young tableau with two columns of equal length. When these theories also h
Externí odkaz:
http://arxiv.org/abs/2205.12272
Publikováno v:
J. High Energ. Phys. 2021, 148 (2021)
We discuss some general aspects of commutators of local operators in Lorentzian CFTs, which can be obtained from a suitable analytic continuation of the Euclidean operator product expansion (OPE). Commutators only make sense as distributions, and car
Externí odkaz:
http://arxiv.org/abs/2012.15724
We study correlation functions involving generalized ANEC operators of the form $\int dx^- \left(x^-\right)^{n+2} T_{--}(\vec{x})$ in four dimensions. We compute two, three, and four-point functions involving external scalar states in both free and h
Externí odkaz:
http://arxiv.org/abs/2011.13862
We study the exact entropy of four-dimensional $\mathcal{N}=2$ black holes in M-theory both from the brane and supergravity points of view. On the microscopic side the degeneracy is given by a Fourier coefficient of the elliptic genus of the dual two
Externí odkaz:
http://arxiv.org/abs/1912.00029
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