Outputs (603)

Towards the Virasoro-Shapiro amplitude in AdS5×S5 (2021)
Journal Article

We propose a systematic procedure for obtaining all single trace 1/2-BPS correlators in N = 4 super Yang-Mills corresponding to the four-point tree-level amplitude for type IIB string theory in AdS5 × S5. The underlying idea is to compute generalised... Read More about Towards the Virasoro-Shapiro amplitude in AdS5×S5.

Contribution of the Darwin operator to non-leptonic decays of heavy quarks (2020)
Journal Article

We compute the Darwin operator contribution (1/m3b correction) to the width of the inclusive non-leptonic decay of a B meson (B+, Bd or Bs), stemming from the quark flavour-changing transition b → q1q¯¯2q3, where q1, q2 = u, c and q3 = d, s. The key... Read More about Contribution of the Darwin operator to non-leptonic decays of heavy quarks.

Worldline theories with towers of internal states (2020)
Journal Article

We study particle theories that have a tower of worldline internal degrees of freedom. Such a theory can arise when the worldsheet of closed strings is dimensionally reduced to a worldline, in which case the tower is infinite with regularly spaced ma... Read More about Worldline theories with towers of internal states.

Quantum machine learning for particle physics using a variational quantum classifier (2021)
Journal Article

Quantum machine learning aims to release the prowess of quantum computing to improve machine learning methods. By combining quantum computing methods with classical neural network techniques we aim to foster an increase of performance in solving clas... Read More about Quantum machine learning for particle physics using a variational quantum classifier.

CP violation in neutral lepton transition dipole moment (2020)
Journal Article

The CP violation in the neutrino transition electromagnetic dipole moment is discussed in the context of the Standard Model with an arbitrary number of right-handed singlet neutrinos. A full one-loop calculation of the neutrino electromagnetic form f... Read More about CP violation in neutral lepton transition dipole moment.

G 4 flux, algebraic cycles and complex structure moduli stabilization (2021)
Journal Article

We construct G4 fluxes that stabilize all of the 426 complex structure moduli of the sextic Calabi-Yau fourfold at the Fermat point. Studying flux stabilization usually requires solving Picard-Fuchs equations, which becomes unfeasible for models with... Read More about G 4 flux, algebraic cycles and complex structure moduli stabilization.

Spectral curves of hyperbolic monopoles from ADHM (2021)
Journal Article

Magnetic monopoles in hyperbolic space are in correspondence with certain algebraic curves in mini-twistor space, known as spectral curves, which are in turn in correspondence with rational maps between Riemann spheres. Hyperbolic monopoles correspon... Read More about Spectral curves of hyperbolic monopoles from ADHM.

Gravitational Waves and Proton Decay: Complementary Windows into Grand Unified Theories (2021)
Journal Article

Proton decay is a smoking gun signature of grand unified theories (GUTs). Searches by Super-Kamiokande have resulted in stringent limits on the GUT symmetry-breaking scale. The large-scale multipurpose neutrino experiments DUNE, Hyper-Kamiokande, and... Read More about Gravitational Waves and Proton Decay: Complementary Windows into Grand Unified Theories.

Sigma models with local couplings: a new integrability-RG flow connection (2020)
Journal Article

We consider several classes of σ-models (on groups and symmetric spaces, η-models, ⋋-models) with local couplings that may depend on the 2d coordinates, e.g. on time τ . We observe that (i) starting with a classically integrable 2d σ-model, (ii) form... Read More about Sigma models with local couplings: a new integrability-RG flow connection.

A Positive Resampler for Monte Carlo events with negative weights (2020)
Journal Article

We propose the Positive Resampler to solve the problem associated with event samples from state-of-the-art predictions for scattering processes at hadron colliders typically involving a sizeable number of events contributing with negative weight. The... Read More about A Positive Resampler for Monte Carlo events with negative weights.

Classifying standard model extensions effectively with precision observables (2021)
Journal Article

Effective theories are well established theoretical frameworks to describe the effect of energetically widely separated UV models on observables at lower energy scales. Due to the complexity of the effective theory when taking all the Standard Model... Read More about Classifying standard model extensions effectively with precision observables.

Making near-extremal wormholes traversable (2020)
Journal Article

We construct a traversable wormhole from a charged AdS black hole by adding a coupling between the two boundary theories. We investigate how the effect of this deformation behaves in the extremal limit of the black hole. The black holes have finite e... Read More about Making near-extremal wormholes traversable.

Applications of alpha space (2020)
Journal Article

We extend the definition of ‘alpha space’ as introduced in [1] to two spacetime dimensions. We discuss how this can be used to find conformal block decompositions of known functions and how to easily recover several lightcone bootstrap results. In th... Read More about Applications of alpha space.

Search for bottom-type, vectorlike quark pair production in a fully hadronic final state in proton-proton collisions at s=13  TeV (2020)
Journal Article

A search is described for the production of a pair of bottom-type vectorlike quarks (VLQs), each decaying into a b or ¯ b quark and either a Higgs or a Z boson, with a mass greater than 1000 GeV. The analysis is based on data from proton-proton colli... Read More about Search for bottom-type, vectorlike quark pair production in a fully hadronic final state in proton-proton collisions at s=13  TeV.

Five-dimensional non-Lorentzian conformal field theories and their relation to six-dimensions (2021)
Journal Article

We study correlation functions in five-dimensional non-Lorentzian theories with an SU(1, 3) conformal symmetry. Examples of such theories have recently been obtained as Ω-deformed Yang-Mills Lagrangians arising from a null reduction of six-dimensiona... Read More about Five-dimensional non-Lorentzian conformal field theories and their relation to six-dimensions.

Color/kinematics duality in AdS4 (2021)
Journal Article

In flat space, the color/kinematics duality states that perturbative Yang-Mills amplitudes can be written in such a way that kinematic numerators obey the same Jacobi relations as their color factors. This remarkable duality implies BCJ relations for... Read More about Color/kinematics duality in AdS4.

Quantum computing for quantum tunneling (2021)
Journal Article

We demonstrate how quantum field theory problems can be practically encoded by using a discretization of the field theory problem into a general Ising model, with the continuous field values being encoded into Ising spin chains. To illustrate the met... Read More about Quantum computing for quantum tunneling.

Entanglement entropy in warped conformal field theories (2016)
Journal Article

Vortices in holographic superfluids and superconductors as conformal defects (2014)
Journal Article

Effective operator bases for beyond Standard Model scenarios: an EFT compendium for discoveries (2021)
Journal Article

It is not only conceivable but likely that the spectrum of physics beyond the Standard Model (SM) is non-degenerate. The lightest non-SM particle may reside close enough to the electroweak scale that it can be kinematically probed at high-energy expe... Read More about Effective operator bases for beyond Standard Model scenarios: an EFT compendium for discoveries.