Minimal spin deflection of Kerr-Newman and supersymmetric black hole

Chen, Bo-Ting; Chung, Ming-Zhi; Huang, Yu-tin; Tam, Man Kuan

doi:10.1007/jhep10(2021)011

Cited by 10 publications

(7 citation statements)

References 43 publications

(58 reference statements)

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“…Many of such advances characterize new approaches in outstanding problems in string theory as well as in quantum field theory [12]. In the latter case, for instance, a conjecture linking entanglement suppression and the presence of symmetries was proposed based on an observation for nuclear forces [13] and later was also seen in the context of black hole physics [14,15] (see also Ref. [16]).…”

Section: Introductionmentioning

confidence: 99%

Quantum SMEFT tomography: top quark pair production at the LHC

Aoude¹,

Madge²,

Maltoni³

et al. 2022

Preprint

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Quantum information observables, such as entanglement measures, provide a powerful way to characterize the properties of quantum states. We propose to use them to probe the structure of fundamental interactions and to search for new physics at high energy. Inspired by recent proposals to measure entanglement of top quark pairs produced at the LHC, we examine how higher-dimensional operators in the framework of the SMEFT modify the Standard Model expectations. We explore two regions of interest in the phase space where the Standard Model produces maximally entangled states: at threshold and in the high-energy limit. We unveil a non-trivial pattern of effects, which depend on the initial state partons, q q or gg, on whether only linear or up to quadratic SMEFT contributions are included, and on the phase space region. In general, we find that higher-dimensional effects lower the entanglement predicted in the Standard Model.

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Section: Introductionmentioning

confidence: 99%

Quantum SMEFT tomography: top quark pair production at the LHC

Aoude¹,

Madge²,

Maltoni³

et al. 2022

Preprint

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“…Recently, relative entanglement entropy of binary Kerr black holes is found to be nearly zero for minimal coupling in the Eikonal limit, and increases when spin multipole moments are turned on [8]. We are interested in the relative entanglement entropy of supersymmetric black holes, and examine whether BPS limit results the lowest entropy, relative to non-BPS amplitudes [9].…”

Section: Discussionmentioning

confidence: 99%

Non-BPS Supersymmetric 3pt Amplitude for One Massless, Two Equally Massive Particles

Chen

2021

Preprint

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In this paper, the non-BPS amplitudes (Z < 2m) are considered. Utilizing on-shell methods, the three point amplitudes of two equal-mass particles and one massless particle were constructed, where the two massive particles are non-BPS states. We verify the result by matching the Z = 0 and BPS limit with N = 2 supersymmetry. As an application we derive the non-BPS coupling for N = 4 super-Maxwell and supergravity.

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“…It was observed in ref. [65] that the change in spin-entanglement entropy is minimized for minimal couplings, which was later identified as the suppression of spin-flipping sector in the eikonal phase [66]. The absence of spinflipping sectors for the 1 PM eikonal amplitude is not surprising as minimal coupling for massive spinning higher spins are defined such that it has optimal power counting in the UV, which corresponds to helicity preserving interactions.…”

Section: Introductionmentioning

confidence: 99%

Gravitational Faraday effect from on-shell amplitudes

Chen

Chung

Huang

et al. 2022

J. High Energ. Phys.

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Effects of massive object’s spin on massive-massless 2 → 2 classical scattering is studied. Focus is set on the less-considered dimensionless expansion parameter λ/b, where λ is the massless particle’s wavelength and b is the impact parameter. Corrections in λ/b start to appear from $$ \mathcal{O} $$ O (G2), with leading correction terms tied to the gravitational Faraday effect, which is a special case of the Lense-Thirring effect. We compute the eikonal phase up to $$ \mathcal{O} $$ O (G2) and extract spin effect on the scattering angle and time delay up to 14th order in spin. The gravitational Faraday effect at linear order in spin [1] is reproduced by λ/b correction terms, which we compute to higher orders in spin. We find that the equivalence principle, or universality, holds up to NLO for general spinning bodies, i.e. away from geometric optics limit. Furthermore, in the black hole limit, we confirm the absence of particular spin structure observed [2–8], along with the associated shift symmetry [7], and argue that it holds to arbitrary spin order at $$ \mathcal{O} $$ O (G2) in the massless probe limit.

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Minimal spin deflection of Kerr-Newman and supersymmetric black hole

Cited by 10 publications

References 43 publications

Quantum SMEFT tomography: top quark pair production at the LHC

Quantum SMEFT tomography: top quark pair production at the LHC

Non-BPS Supersymmetric 3pt Amplitude for One Massless, Two Equally Massive Particles

Gravitational Faraday effect from on-shell amplitudes

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