Blar i Department of Mathematics and Physics (TN-IMF) på utgivelsesdato
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Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation
(Peer reviewed; Journal article, 2019)Single-crystal diamond is considered as an ideal material for compound refractive lenses (usually abbreviated to “CRLs”) mainly due to its stability when bathed in strong X-ray radiation. Since CRLs come into operation by ... -
Gauged Wess-Zumino terms for a general coset space
(Peer reviewed; Journal article, 2019)The low-energy physics of systems with spontaneously broken continuous symmetry is dominated by the ensuing Nambu-Goldstone bosons. It has been known for half a century how to construct invariant Lagrangian densities for ... -
Exploits, advances, and challenges benefiting beyond Li-ion battery technologies
(Peer reviewed; Journal article, 2019)The battery market is undergoing quick expansion owing to the urgent demand for mobile devices, electric vehicles and energy storage systems, convoying the current energy transition. Beyond Li-ion batteries are of high ... -
Effective kinetic description of event-by-event pre-equilibrium dynamics in high-energy heavy-ion collisions
(Peer reviewed; Journal article, 2019)We develop a macroscopic description of the space-time evolution of the energy-momentum tensor during the pre-equilibrium stage of a high-energy heavy-ion collision. Based on a weak coupling effective kinetic description ... -
Real-time quantum dynamics, path integrals and the method of thimbles
(Peer reviewed; Journal article, 2019)Direct numerical evaluation of the real-time path integral has a well-known sign problem that makes convergence exponentially slow. One promising remedy is to use Picard-Lefschetz theory to flow the domain of the field ... -
Flow in AA and pA as an interplay of fluid-like and non-fluid like excitations
(Peer reviewed; Journal article, 2019)To study the microscopic structure of quark–gluon plasma, data from hadronic collisions must be confronted with models that go beyond fluid dynamics. Here, we study a simple kinetic theory model that encompasses fluid ... -
Chemical equilibration in weakly coupled QCD
(Peer reviewed; Journal article, 2019)We study thermalization, hydrodynamization, and chemical equilibration in out-of-equilibrium quark-gluon plasma starting from various initial conditions using QCD effective kinetic theory, valid at weak coupling. In ... -
Chemical equilibration in hadronic collisions
(Peer reviewed; Journal article, 2019)We study chemical equilibration in out-of-equilibrium quark-gluon plasma using the first principles method of QCD effective kinetic theory, accurate at weak coupling. In longitudinally expanding systems—relevant for ... -
A GIT construction of degenerations of Hilbert schemes of points
(Peer reviewed; Journal article, 2019)We present a Geometric Invariant Theory (GIT) construction which allows us to construct good projective degenerations of Hilbert schemes of points for simple degenerations. A comparison with the construction of Li and Wu ... -
Reconstructing parton distribution functions from Ioffe time data: from Bayesian methods to Neural Networks
(Peer reviewed; Journal article, 2019)The computation of the parton distribution functions (PDF) or distribution amplitudes (DA) of hadrons from first principles lattice QCD constitutes a central open problem. In this study, we present and evaluate the efficiency ... -
Flavor structure of GUTs and uncertainties in proton lifetime estimates
(Peer reviewed; Journal article, 2019)We study the flavor aspects of proton lifetime estimates in simple grand-unified models, paying particular attention to their inherent fragility due to the notorious lack of control of some of the key parameters governing ... -
Spontaneous momentum dissipation and coexistence of phases in holographic Horndeski theory
(Peer reviewed; Journal article, 2019)We discuss the possible phases dual to the AdS hairy black holes in Horndeski theory. In the probe limit breaking the translational invariance, we study the conductivity and we find a nontrivial structure indicating a ... -
Chiral soliton lattice in QCD-like theories
(Peer reviewed; Journal article, 2019)Recently, it has been shown that the ground state of quantum chromodynamics (QCD) in suffciently strong magnetic fields and at moderate baryon number chemical potential carries a crystalline condensate of neutral pions: ... -
Anomaly-Induced Inhomogeneous Phase in Quark Matter without the Sign Problem
(Peer reviewed; Journal article, 2019)We demonstrate the existence of an anomaly-induced inhomogeneous phase in a class of vectorlike gauge theories without the sign problem, thus disproving the long-standing conjecture that the absence of the sign problem ... -
Spectral function for overoccupied gluodynamics from classical lattice simulations
(Peer reviewed; Journal article, 2019)We study the spectral properties of an overoccupied gluonic system far from equilibrium. Using classical Yang–Mills simulations and linear response theory, we determine the statistical and spectral functions. We measure ... -
Realistic in-medium heavy-quark potential from high statistics lattice QCD simulations
(Peer reviewed; Journal article, 2019)We present our first results on a direct computation of the complex in-medium heavy quark potential from realistic lattice QCD simulations. Ensembles with Nτ = 12 from the HotQCD and TUMQCD collaboration offer unprecedented ... -
Bottomonium suppression at RHIC and LHC
(Peer reviewed; Journal article, 2019-02)The strong suppression of heavy quarkonia is a good indicator that one has generated a quark-gluon plasma (QGP) in an ultrarelativistic heavy ion collision. Recent advancements in first principles calculations of the heavy ... -
Quantum dynamical dissociation of quarkonia by wave function decoherence in quark-gluon plasma
(Peer reviewed; Journal article, 2019-02)In this study, we investigate the real-time evolution of quarkonium bound states in a quark-gluon plasma in an improved QCD based stochastic potential model. This model describes the quarkonium dynamics in terms of a ... -
Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory
(Peer reviewed; Journal article, 2019-03)High-energy nuclear collisions produce a nonequilibrium plasma of quarks and gluons which thermalizes and exhibits hydrodynamic flow. There are currently no practical frameworks to connect the early particle production in ... -
A Class of Tests for Trend in Time Censored Recurrent Event Data
(Journal article; Peer reviewed, 2019-04)Statistical tests for trend in recurrent event data not following a Poisson process are generally constructed for event censored data. However, time censored data are more frequently encountered in practice. In this paper ...