Concept
String theory
Related publications (335)
Nonequilibrium quasistationary spin disordered state in ?-RuCl3
We photoexcite high-energy holon-doublon pairs as a way to alter the magnetic free energy landscape and resulting phase diagram of the frustrated honeycomb magnet ??-RuCl3. The pair recombination through multimagnon emission is tracked through the time evo ...
AMER PHYSICAL SOC2022Energy correlators of hadronically decaying electroweak bosons
Lorenzo Ricci, Marc Riembau Saperas
Energy correlators are field-theoretically clean and phenomenologically valuable probes of QCD dynamics. We explore the possibility of using the information encoded in the energy correlators of a hadronically decaying electroweak vector boson in order to e ...
College Pk2022Where Is String Theory in the Space of Scattering Amplitudes?
We use the S-matrix bootstrap to carve out the space of unitary, crossing symmetric and supersymmetric graviton scattering amplitudes in ten dimensions. We focus on the leading Wilson coefficient a controlling the leading correction to maximal supergravity ...
AMER PHYSICAL SOC2021Hamiltonian truncation in Anti-de Sitter spacetime
Marco Meineri, Kamran Salehi Vaziri, Matthijs Jan Hogervorst
Quantum Field Theories (QFTs) in Anti-de Sitter (AdS) spacetime are often strongly coupled when the radius of AdS is large, and few methods are available to study them. In this work, we develop a Hamiltonian truncation method to compute the energy spectrum ...
SPRINGER2021A note on the large charge expansion in 4d CFT
In this letter, we discuss certain universal predictions of the large charge expansion in conformal field theories with U (1) symmetry, mainly focusing on four-dimensional theories. We show that, while in three dimensions quantum fluctuations are responsib ...
ELSEVIER2021Stochastic gravitational-wave background from metastable cosmic strings
A metastable cosmic-string network is a generic consequence of many grand unified theories (GUTs) when combined with cosmic inflation. Metastable cosmic strings are not topologically stable, but decay on cosmic time scales due to pair production of GUT mon ...
IOP Publishing Ltd2021High-energy EFT probes with fully differential Drell-Yan measurements
We study the potential of fully-differential measurements of high-energy dilepton cross-sections at the LHC to probe heavy new physics encapsulated in dimension-6 interaction operators. The assessment is performed in the seven-dimensional parameter space o ...
SPRINGER2021An analytical toolkit for the S-matrix bootstrap
Alexander Zhiboedov, Miguel Alexandre Ribeiro Correia, Amit Sever
We revisit analytical methods for constraining the nonperturbative S-matrix of unitary, relativistic, gapped theories in d >= 3 spacetime dimensions. We assume extended analyticity of the two-to-two scattering amplitude and use it together with elastic uni ...
SPRINGER2021Applications of dispersive sum rules: epsilon-expansion and holography
Alexander Zhiboedov, João Pedro Alves Da Silva, Din Carmi
We use Mellin space dispersion relations together with Polyakov conditions to derive a family of sum rules for Conformal Field Theories (CFTs). The defining property of these sum rules is suppression of the contribution of the double twist operators. First ...
SCIPOST FOUNDATION2021Fourier Interpolation From Spheres
In every dimension d >= 2, we give an explicit formula that expresses the values of any Schwartz function on R-d only in terms of its restrictions, and the restrictions of its Fourier transform, to all origin-centered spheres whose radius is the square roo ...
AMER MATHEMATICAL SOC2021