Theoretical Physics: Recent submissions
Now showing items 1-20 of 188
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On the anomaly interpretation of amplitudes in self-dual Yang-Mills and gravity
(Springer, 2024-07-16)We investigate the integrability anomalies arising in the self-dual sectors of gravity and Yang-Mills theory, focusing on their connection to both the chiral anomaly and the trace anomaly. The anomalies in the self-dual ... -
The uncertainty principle and classical amplitudes
(Springer Nature, 2024-06-26)We study the variance in the measurement of observables during scattering events, as computed using amplitudes. The classical regime, characterised by negligible uncertainty, emerges as a consequence of an infinite set of ... -
No U(1) ‘electric-magnetic’ duality in Einstein gravity
(Springer Nature, 2024-04-17)We revisit the question of whether classical general relativity obeys, beyond the linearised order, an analogue of the global U(1) electric-magnetic duality of Maxwell theory, with the Riemann tensor playing the role ... -
Machine Learning Clifford Invariants of ADE Coxeter Elements
(Springer Nature, 2024-07) -
The Inverse of Exact Renormalization Group Flows as Statistical Inference
(MDPI, 2024-04-30)We build on the view of the Exact Renormalization Group (ERG) as an instantiation of Optimal Transport described by a functional convection–diffusion equation. We provide a new information-theoretic perspective for ... -
Next-to-soft radiation from a different angle
(American Physical Society, 2024-04-08)Soft and collinear radiation in collider processes can be described in a universal way, that is independent of the underlying process. Recent years have seen a number of approaches for probing whether radiation beyond the ... -
The cosmological tree theorem
(Springer, 2023-12-12)A number of diagrammatic “cutting rules” have recently been developed for the wavefunction of the Universe which determines cosmological correlation functions. These leverage perturbative unitarity to relate particular ... -
Positivity and the electroweak hierarchy
(American Physical Society, 2024-02-21)We point out that an unnatural hierarchy between certain higher-dimensional operator coefficients in a low-energy effective field theory (EFT) would automatically imply that the Higgs' vacuum expectation value is hierarchically ... -
Kinematic Hopf algebra for amplitudes from higher-derivative operators
(2024-02-01)Recently it has been shown that Bern-Carrasco-Johansson (BCJ) numerators of colour-kinematic duality for tree-level scattering amplitudes in Yang-Mills theory (coupled with scalars) can be determined using a quasi-shuffle ... -
Integrated Correlators in N=4 Supersymmetric Yang-Mills Theory beyond Localization.
(2024-03-08)We study integrated correlators of four superconformal primaries O_{p} with arbitrary charges p in N=4 super Yang-Mills theory. The ⟨O_{2}O_{2}O_{p}O_{p}⟩ integrated correlators can be computed by supersymmetric localization, ... -
Twisted self-duality
(2023) -
Bayesian renormalization
(2023-12-01)In this note we present a fully information theoretic approach to renormalization inspired by Bayesian statistical inference, which we refer to as Bayesian renormalization. The main insight of Bayesian renormalization is ... -
Resummed spinning waveforms from five-point amplitudes
(Springer Science and Business Media LLC, 2024-02-05)We compute the classical tree-level five-point amplitude for the two-to-two scattering of spinning celestial objects with the emission of a graviton. Using this five-point amplitude, we then turn to the computation of the ... -
Exact operator map from strong coupling to free fields: Beyond Seiberg-Witten theory
(American Physical Society, 2024)In quantum field theory (QFT) above two spacetime dimensions, one is usually only able to construct exact operator maps from the ultraviolet (UV) to the infrared (IR) of strongly coupled renormalization group (RG) flows ... -
Orbital precession and hidden symmetries in scalar-tensor theories
(IOP Publishing, 2023-11-01)We revisit the connection between relativistic orbital precession, the Laplace-Runge-Lenz symmetry, and the t-channel discontinuity of scattering amplitudes. Applying this to scalar-tensor theories of gravity, we compute ...