Refine
Has Fulltext
- yes (105)
Is part of the Bibliography
- yes (105)
Year of publication
Document Type
- Journal article (105) (remove)
Language
- English (105) (remove)
Keywords
- topological insulators (8)
- physics (7)
- NLO Computations (6)
- NLO computations (5)
- AdS-CFT Correspondence (4)
- Gauge-gravity correspondence (3)
- LHC (3)
- active galactic nuclei (3)
- black holes (3)
- condensed matter physics (3)
- economic growth (3)
- Josephson junctions (2)
- Large Hadron Collider (2)
- Neutrino Telescope (2)
- Physics (2)
- Physik (2)
- accretion (2)
- edge states (2)
- electronic properties and materials (2)
- emissions (2)
- energy (2)
- entropy production (2)
- excitons (2)
- ferromagnetism (2)
- general relativity (2)
- high energy physics (2)
- holography and condensed matter physics (AdS/CMT) (2)
- monitoring (2)
- neutrino astronomy (2)
- neutrino emission (2)
- neutrino telescope (2)
- output elasticities (2)
- relativistic jets (2)
- states (2)
- strongly correlated materials (2)
- superconductivity (2)
- supersymmetry (2)
- surface (2)
- unconventional superconductivity (2)
- very-long-baseline interferometry (2)
- 1/N expansion (1)
- 2-loop level (1)
- 2ϕ\(_0\) periodicity (1)
- ANTARES telescope (1)
- Accidental coincidence (1)
- AdS-CFT correspondence (1)
- Anomalous magnetic-moment (1)
- Astrophysical neutrino sources (1)
- Atmospheric muons (1)
- Au/Ge(111) (1)
- BaPb\(_{1-X}\)Bi\(_{X}\)O\(_{3}\) (1)
- Bethe–Salpeter equation (1)
- Black Holes in String Theory (1)
- Black-hole (1)
- Bound-states (1)
- Breaking (1)
- CMSSM Point (1)
- Calibration (1)
- Charged Scalar Field (1)
- Cherenkov underwater neutrino telescope (1)
- Combinatorial Background (1)
- Complexity (1)
- Conformal Field Theory (1)
- Cosmic-rays (1)
- DFT+U (1)
- DNA electronic transport (1)
- Dark Matter (1)
- Dark matter (1)
- Dark-Matter (1)
- Dirac points (1)
- Drinfel’d twists (1)
- EHT (1)
- EMMA (1)
- Entanglement (1)
- FRG (1)
- FRG calculations (1)
- False Vacuum (1)
- First G-APD Cherenkov Telescope (1)
- FormCalc8 (1)
- G-2 (1)
- Galactic Ridge (1)
- Galactic sources (1)
- Gamma-ray bursts (1)
- Gauge-dependent Quantity (1)
- Germanium telluride (1)
- Green's function (1)
- Green’s functions (1)
- Hall effect (1)
- Higgs Boson (1)
- Higgs Mass (1)
- Higgs boson (1)
- Higgs-boson (1)
- High energy physics (1)
- High-energy jets (1)
- Holography and condensed matter physics (AdS/CMT) (1)
- Homotopy Continuation Method (1)
- Hubbard model (1)
- Hubbard-model (1)
- III–V quantum dot (1)
- Icecube (1)
- Imaging Air Cherenkov Telescope (1)
- K-PG radiation (1)
- KM3NeT (1)
- Landau Gauge (1)
- Landau level (1)
- Laplace transform (1)
- Light (1)
- Light Supersymmetric Particle (1)
- MSSM (1)
- Magnetfeld (1)
- Majorana fermions (1)
- Markarian 501 (1)
- Mass (1)
- Matter (1)
- Maxwell demon (1)
- Minimal Surface Tension (1)
- Minimal supersymmetric model (1)
- NI(111) (1)
- Netzwerk (1)
- Neutrino Detectors and Telescopes (experiments) (1)
- Neutrino data (1)
- Neutrino emission (1)
- Neutrino mass mixing (1)
- Neutrino telescope (1)
- ODE (1)
- One-loop Effective Potential (1)
- Oscillation (1)
- PET (1)
- PMMA (1)
- Particle-acceleration (1)
- QCD (1)
- R-sneutrino (1)
- Radiation (1)
- Radiative-corrections (1)
- Rashba effect (1)
- Reduction (1)
- Relative Entropy (1)
- Remnant RX J1713.7-3946 (1)
- Remotely Operate Vehicle (1)
- Renormalization Scale (1)
- SLHA File (1)
- SM Gauge Group (1)
- Saddle Point (1)
- Sarah (1)
- Search window (1)
- Shell (1)
- SmB\(_{6}\) (1)
- Spectrum (1)
- Spectrum Generator (1)
- Spheno (1)
- Sr\(_2\)RuO\(_4\) (1)
- Supernova (1)
- Supersymmetry (1)
- Supersymmetry Breaking (1)
- System (1)
- Szilárd (1)
- TEV (1)
- Tamm plasmons (1)
- TeV energies (1)
- Time Calibration (1)
- True Vacuum (1)
- Tunneling Time (1)
- Vacuum stability (1)
- W-boson (1)
- WIMP (1)
- Wright functions (1)
- Zenith Angle (1)
- advanced composition explorer (1)
- aggregation (1)
- alerts (1)
- algorithms (1)
- alpha monitor (1)
- ancestor (1)
- angle-resolved photoemission spectroscopy (1)
- anyons (1)
- asymmetric dark matter (1)
- band structure methods (1)
- baryon asymmetry (1)
- bateman functions (1)
- beta-beam (1)
- blazars (1)
- cat (1)
- chirality-induced spin selectivity (1)
- coexistence (1)
- coherence (1)
- collisionless shocks (1)
- columnar architecture (1)
- computational physics (1)
- confinement-deconfinement transition (1)
- confluent hypergeometric functions (1)
- conjugated honeycomb-chained-trimer (1)
- cornea (1)
- correlated electrons (1)
- correlated systems (1)
- cortical magnification factor (1)
- cost-share theorem (1)
- critical limits (1)
- dSTORM (1)
- dark matter (1)
- dark matter detectors (1)
- dark matter experiments (1)
- dark matterWIMP (1)
- data analysis (1)
- deep learning–artificial neural network (DL-ANN) (1)
- deep sea neutrino telescope (1)
- deformation quantization (1)
- density functional theory (1)
- diffraction (1)
- diffusion-wave equation (1)
- dirac fermions (1)
- direction selectivity (1)
- dynamical mean field (1)
- dynamical mean field theory (1)
- effective field theories (1)
- efficiency (1)
- electron (1)
- electronic states (1)
- electronic structure (1)
- electronic-structure calculations (1)
- electroweak phase transition (1)
- energy bands (1)
- entropy (1)
- eutrino physics (1)
- excimer laser ablation (1)
- excitations (1)
- extraction efficiency (1)
- fermions (1)
- ferroelectricity (1)
- field theory on curved spacetimes (1)
- flares (1)
- flavour symmetry (1)
- fluctuation theorem (1)
- fluid (1)
- flux distributions (1)
- fractional calculus (1)
- fractional variability (1)
- functional architecture (1)
- functional renormalization group (1)
- gamma rays (1)
- gapless Andreev bound states (1)
- gas (1)
- gauge-gravity correspondence (1)
- grand unified theories (1)
- hadronic colliders (1)
- half-metals (1)
- havelock functions (1)
- heavy fermion insulators (1)
- helical molecules (1)
- helimagnets (1)
- heliosphere (1)
- heliospheric shocks (1)
- high energy neutrinos (1)
- high-energy (1)
- honeycomb lattice (1)
- hybrid state (1)
- imaging (1)
- impact of humidity and temperature (1)
- indirect detection (1)
- inelastic neutron scattering (1)
- infinite dimensions (1)
- information engine (1)
- infrared spectroscopy (1)
- initio molecular dynamics (1)
- inplane spectral weight (1)
- instrument (1)
- instrument design (1)
- insulator (1)
- insulators (1)
- integral-bateman functions (1)
- integrators (1)
- interference pattern (1)
- interferometry (1)
- inverse seesaw (1)
- ion dynamics (1)
- iron (1)
- lateral geniculate-nucleus (1)
- lattice (1)
- lattices (1)
- leptogenesis (1)
- localized wannier functions (1)
- long-term monitoring (1)
- magnetic properties and materials (1)
- magnetism (1)
- maps (1)
- maximum power (1)
- mean-field theory (1)
- mesoscopics (1)
- metals (1)
- microcavity exciton polaritons (1)
- microtubule cytoskeleton (1)
- minimal supersymmetric standard model (MSSM) (1)
- model (1)
- monkey striate cortex (1)
- monolayer graphite (1)
- multi-messenger (1)
- mutual information (1)
- nanophysics (1)
- near-gap spectra (1)
- neutralino (1)
- neutrino (1)
- neutrino detectors (1)
- neutrino flux (1)
- neutrino mass hierarchy (1)
- neutrino masses (1)
- neutrino mixing (1)
- next-to-leading-order electroweak corrections (1)
- ngEHT (1)
- nickel (1)
- nodal knots (1)
- non-linear waves (1)
- noncommutative field theory (1)
- ocular dominance columns (1)
- optimization (1)
- ordinary differential equations (1)
- orientation columns (1)
- output elasicities (1)
- particle acceleration (1)
- particle physics (1)
- path indistinguishability (1)
- pattern formation (1)
- phase transitions (1)
- phase transitions and critical phenomena (1)
- phenomenological models (1)
- phenomenology (1)
- phenomenology of New Physics (1)
- photonic structure (1)
- placental mammal (1)
- plasma (1)
- plasmons (1)
- pollution functions (1)
- projects (1)
- protein-interaction networks (1)
- quantum optics (1)
- quantum spin (1)
- radiation (1)
- radio (1)
- radio astronomy (1)
- radio emissions (dynamic) (1)
- real-time (1)
- receptive fields (1)
- refractive surgery (1)
- resummation (1)
- retinotopic organization (1)
- samarium hexaboride (1)
- scattering amplitudes (1)
- semiconductors (1)
- silicon photo multiplier (1)
- simple receptive-fields (1)
- single molecule localization microscopy (1)
- single-photon emitter (1)
- spectrometer (1)
- spin polarization (1)
- spin response (1)
- spin structures (1)
- spin transport (1)
- spin waves (1)
- spin-orbitronics (1)
- spintronics (1)
- standard seesaw (1)
- stereo mission (1)
- striate cortex (1)
- su-schrieffer-heeger (SSH) models (1)
- sun (1)
- super-resolution (1)
- superconducting instability (1)
- supersymmetric model (1)
- supersymmetric standard model (1)
- supersymmetry (SUSY) (1)
- supersymmetry phenomenology (1)
- system (1)
- telecommunication spectral range (1)
- telescopes (1)
- temperature (1)
- tight-binding (1)
- topography (1)
- topolectrical circuits (1)
- topological magnetoelectric effect (1)
- topological materials (1)
- topological matter (1)
- topological phase transitions (1)
- topological states (1)
- total energy calculations (1)
- transistors (1)
- transition (1)
- transition metal dichalcogenides (1)
- transition metal oxides (1)
- transition metals (1)
- tree shrew (1)
- tunneling spectroscopy (1)
- two-dimensional materials (1)
- two-dimensions (1)
- ultrasoft pseudopotentials (1)
- universality (1)
- valleytronics (1)
- variability (1)
- vector-boson scattering (1)
- very high energies (VHE) (1)
- very high energy (1)
- very high energy gamma rays (1)
- very long baseline interferometry (1)
- wave basis set (1)
- wave functions (1)
- wave superconductors (1)
- weak coupling (1)
- wind spacecraft (1)
- wrath (1)
Institute
- Institut für Theoretische Physik und Astrophysik (105) (remove)
Sonstige beteiligte Institutionen
The topological classification of electronic band structures is based on symmetry properties of Bloch eigenstates of single-particle Hamiltonians. In parallel, topological field theory has opened the doors to the formulation and characterization of non-trivial phases of matter driven by strong electron-electron interaction. Even though important examples of topological Mott insulators have been constructed, the relevance of the underlying non-interacting band topology to the physics of the Mott phase has remained unexplored. Here, we show that the momentum structure of the Green’s function zeros defining the “Luttinger surface" provides a topological characterization of the Mott phase related, in the simplest description, to the one of the single-particle electronic dispersion. Considerations on the zeros lead to the prediction of new phenomena: a topological Mott insulator with an inverted gap for the bulk zeros must possess gapless zeros at the boundary, which behave as a form of “topological antimatter” annihilating conventional edge states. Placing band and Mott topological insulators in contact produces distinctive observable signatures at the interface, revealing the otherwise spectroscopically elusive Green’s function zeros.
Long-term monitoring of the ANTARES optical module efficiencies using \(^{40}\)K decays in sea water
(2018)
Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection efficiency of optical modules is studied. A modest loss of only 20% in 9 years is observed. The relative time calibration between adjacent modules is derived as well.
One of the main objectives of the ANTARES telescope is the search for point- like neutrino sources. Both the pointing accuracy and the angular resolution of the detector are important in this context and a reliableway to evaluate this performance is needed. In order to measure the pointing accuracy of the detector, one possibility is to study the shadow of the Moon, i. e. the deficit of the atmospheric muon flux from the direction of the Moon induced by the absorption of cosmic rays. Analysing the data taken between 2007 and 2016, theMoon shadow is observed with 3.5s statistical significance. The detector angular resolution for downwardgoing muons is 0.73. +/- 0.14.. The resulting pointing performance is consistent with the expectations. An independent check of the telescope pointing accuracy is realised with the data collected by a shower array detector onboard of a ship temporarily moving around the ANTARES location.
The ANTARES neutrino telescope has an energy threshold of a few tens of GeV. This allows to study the phenomenon of atmospheric muon neutrino disappearance due to neutrino oscillations. In a similar way, constraints on the 3+1 neutrino model, which foresees the existence of one sterile neutrino, can be inferred. Using data collected by the ANTARES neutrino telescope from 2007 to 2016, a new measurement of m 2 and (23) has been performed which is consistent with world best-fit values and constraints on the 3+1 neutrino model have been derived.
We consider the process of muon-electron elastic scattering, which has been proposed as an ideal framework to measure the running of the electromagnetic coupling constant at space-like momenta and determine the leading-order hadronic contribution to the muon g-2 (MUonE experiment). We compute the next-to-leading (NLO) contributions due to QED and purely weak corrections and implement them into a fully differential Monte Carlo event generator, which is available for first experimental studies. We show representative phenomenological results of interest for the MUonE experiment and examine in detail the impact of the various sources of radiative corrections under different selection criteria, in order to study the dependence of the NLO contributions on the applied cuts. The study represents the first step towards the realisation of a high-precision Monte Carlo code necessary for data analysis.
KM3NeT will be a network of deep-sea neutrino telescopes in the Mediterranean Sea. The KM3NeT/ARCA detector, to be installed at the Capo Passero site (Italy), is optimised for the detection of high-energy neutrinos of cosmic origin. Thanks to its geographical location on the Northern hemisphere, KM3NeT/ARCA can observe upgoing neutrinos from most of the Galactic Plane, including the Galactic Centre. Given its effective area and excellent pointing resolution, KM3NeT/ARCA will measure or significantly constrain the neutrino flux from potential astrophysical neutrino sources. At the same time, it will test flux predictions based on gamma-ray measurements and the assumption that the gamma-ray flux is of hadronic origin. Assuming this scenario, discovery potentials and sensitivities for a selected list of Galactic sources and to generic point sources with an E-2 spectrum are presented. These spectra are assumed to be time independent. The results indicate that an observation with 3 sigma significance is possible in about six years of operation for the most intense sources, such as Supernovae Remnants RX J1713.7-3946 and Vela Jr. If no signal will be found during this time, the fraction of the gamma-ray flux coming from hadronic processes can be constrained to be below 50% for these two objects. (C) 2019 The Authors. Published by Elsevier B.V.
We consider the computation of volumes contained in a spatial slice of AdS(3) in terms of observables in a dual CFT. Our main tool is kinematic space, defined either from the bulk perspective as the space of oriented bulk geodesics, or from the CFT perspective as the space of entangling intervals. We give an explicit formula for the volume of a general region in a spatial slice of AdS(3) as an integral over kinematic space. For the region lying below a geodesic, we show how to write this volume purely in terms of entangling entropies in the dual CFT. This expression is perhaps most interesting in light of the complexity = volume proposal, which posits that complexity of holographic quantum states is computed by bulk volumes. An extension of this idea proposes that the holographic subregion complexity of an interval, defined as the volume under its Ryu-Takayanagi surface, is a measure of the complexity of the corresponding reduced density matrix. If this is true, our results give an explicit relationship between entanglement and subregion complexity in CFT, at least in the vacuum. We further extend many of our results to conical defect and BTZ black hole geometries.
The modular Hamiltonian of reduced states, given essentially by the logarithm of the reduced density matrix, plays an important role within the AdS/CFT correspondence in view of its relation to quantum information. In particular, it is an essential ingredient for quantum information measures of distances between states, such as the relative entropy and the Fisher information metric. However, the modular Hamiltonian is known explicitly only for a few examples. For a family of states rho(lambda) that is parametrized by a scalar lambda, the first order contribution in (lambda) over tilde = lambda-lambda(0) of the modular Hamiltonian to the relative entropy between rho(lambda) and a reference state rho(lambda 0) is completely determined by the entanglement entropy, via the first law of entanglement. For several examples, e.g. for ball-shaped regions in the ground state of CFTs, higher order contributions are known to vanish. In these cases the modular Hamiltonian contributes to the Fisher information metric in a trivial way. We investigate under which conditions the modular Hamiltonian provides a non-trivial contribution to the Fisher information metric, i.e. when the contribution of the modular Hamiltonian to the relative entropy is of higher order in (lambda) over tilde. We consider one-parameter families of reduced states on two entangling regions that form an entanglement plateau, i.e. the entanglement entropies of the two regions saturate the Araki-Lieb inequality. We show that in general, at least one of the relative entropies of the two entangling regions is expected to involve (lambda) over tilde contributions of higher order from the modular Hamiltonian. Furthermore, we consider the implications of this observation for prominent AdS/CFT examples that form entanglement plateaux in the large N limit.
We develop a joint formalism and numerical framework for analyzing the superconducting instability of metals from a weak coupling perspective. This encompasses the Kohn–Luttinger formulation of weak coupling renormalization group for superconductivity as well as the random phase approximation imposed on the diagrammatic expansion of the two-particle Green’s function. The central quantity to resolve is the effective interaction in the Cooper channel, for which we develop an optimized numerical framework. Our code is capable of treating generic multi-orbital models in two as well as three spatial dimensions and, in particular, arbitrary avenues of spin-orbit coupling.
We analyze a variety of integration schemes for the momentum space functional renormalization group calculation with the goal of finding an optimized scheme. Using the square lattice t-t' Hubbard model as a testbed we define and benchmark the quality. Most notably we define an error estimate of the solution for the ordinary differential equation circumventing the issues introduced by the divergences at the end of the FRG flow. Using this measure to control for accuracy we find a threefold reduction in number of required integration steps achievable by choice of integrator. We herewith publish a set of recommended choices for the functional renormalization group, shown to decrease the computational cost for FRG calculations and representing a valuable basis for further investigations.