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19922026
most citedObservation of Gravitational Waves from a Binary Black Hole Merger

14.2k citations

Showing 2020 · hep-thShow all

15 papers · 2 filters

hep-th2020★ 38 cited

Modular Hamiltonians for the massless Dirac field in the presence of a defect

Mihail Mintchev, Erik Tonni

We study the massless Dirac field on the line in the presence of a point-like defect characterised by a unitary scattering matrix, that allows both reflection and transmission. Con…

hep-th2020★ 39 cited

Modular Hamiltonians for the massless Dirac field in the presence of a boundary

Mihail Mintchev, Erik Tonni

We study the modular Hamiltonians of an interval for the massless Dirac fermion on the half-line. The most general boundary conditions ensuring the global energy conservation lead…

hep-th2020★ 12 cited

Bootstrapping mixed correlators in Super Yang-Mills

Agnese Bissi, Andrea Manenti, Alessandro Vichi

We perform a numerical bootstrap study of the mixed correlator system containing the half-BPS operators of dimension two and three in Super Yang-Mills. This setup…

hep-th2020★ 11 cited

High-order corrections to inflationary perturbation spectra in quantum gravity

Damiano Anselmi

We compute the inflationary perturbation spectra and the quantity to the next-to-next-to-leading log order in quantum gravity with purely virtual particles (which means…

hep-th2020★ 21 cited

On critical models with scalars in

Alessandro Codello, Mahmoud Safari, Gian Paolo Vacca +1

We adopt a combination of analytical and numerical methods to study the renormalization group flow of the most general field theory with quartic interaction in with a…

hep-th2020★ 13 cited

Quantum field theories of arbitrary-spin massive multiplets and Palatini quantum gravity

Damiano Anselmi

We formulate quantum field theories of massive fields of arbitrary spins. The presence of both physical and fake particles, organized into multiplets, makes it possible to fulfill…

hep-th2020★ 9 cited

Cosmic inflation as a renormalization-group flow: the running of power spectra in quantum gravity

Damiano Anselmi

We study the running of power spectra in inflationary cosmology as a renormalization-group flow from the de Sitter fixed point. The beta function is provided by the equations of th…

hep-th2020★ 29 cited

Is negative kinetic energy meta-stable?

Christian Gross, Alessandro Strumia, Daniele Teresi +1

We explore the possibility that theories with negative kinetic energy (ghosts) can be meta-stable up to cosmologically long times. In classical mechanics, ghosts undergo spontaneou…

hep-th2020★ 4 cited

RG and logarithmic CFT multicritical properties of randomly diluted Ising models

Riccardo Ben Alì Zinati, Omar Zanusso

We discuss how a spin system, which is subject to quenched disorder, might exhibit multicritical behaviors at criticality if the distribution of the impurities is arbitrary. In ord…

hep-th2020★ 5 cited

Analytic Baby Skyrmions at Finite Density

Marco Barsanti, Stefano Bolognesi, Fabrizio Canfora +1

We introduce a consistent ansatz for the baby Skyrme model in (2+1)-dimensions which is able to reduce the complete set of field equations to just one equation for the profile func…

hep-th2020★ 12 cited

Near-BPS baby Skyrmions

Sven Bjarke Gudnason, Marco Barsanti, Stefano Bolognesi

We consider the baby-Skyrme model in the regime close to the so-called restricted baby-Skyrme model, which is a BPS model with area-preserving diffeomorphism invariance. The pertur…

hep-th2020★ 51 cited

Predictions of quantum gravity in inflationary cosmology: effects of the Weyl-squared term

Damiano Anselmi, Eugenio Bianchi, Marco Piva

We derive the predictions of quantum gravity with fakeons on the amplitudes and spectral indices of the scalar and tensor fluctuations in inflationary cosmology. The action is $R+R…

hep-th2020★ 31 cited

Hairy Black-holes in Shift-symmetric Theories

Paolo Creminelli, Nicolás Loayza, Francesco Serra +2

Scalar hair of black holes in theories with a shift symmetry are constrained by the no-hair theorem of Hui and Nicolis, assuming spherical symmetry, time-independence of the scalar…

hep-th2020★ 5 cited

Perturbative BF theory

Enore Guadagnini, Federico Rottoli

We consider a superrenomalizable gauge theory of topological type, in which the structure group is equal to the inhomogeneous group ISU(2). The generating functional of the correla…

hep-th2020★ 29 cited

The quest for purely virtual quanta: fakeons versus Feynman-Wheeler particles

Damiano Anselmi

The search for purely virtual quanta has attracted interest in the past. We consider various proposals and compare them to the concept of fake particle, or "fakeon". In particular,…