Search Results - "Braun, Jens"
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The QCD phase boundary from quark–gluon dynamics
Published in The European physical journal. C, Particles and fields (01-12-2009)“…We study one-flavor QCD at finite temperature and chemical potential using the functional renormalization group. We discuss the chiral phase transition in QCD…”
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On the phase structure of QCD in a finite volume
Published in Physics letters. B (09-07-2012)“…The chiral phase transition in QCD at finite chemical potential and temperature can be characterized for small chemical potential by its curvature and the…”
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3
Delayed magnetic catalysis
Published in Physics letters. B (10-04-2016)“…We study the effect of an external magnetic field on the chiral phase transition in the theory of the strong interaction by means of a renormalization-group…”
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On the scaling behavior of the chiral phase transition in QCD in finite and infinite volume
Published in The European physical journal. C, Particles and fields (01-03-2011)“…We study the scaling behavior of the two-flavor chiral phase transition using an effective quark–meson model. We investigate the transition between…”
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Running coupling at finite temperature and chiral symmetry restoration in QCD
Published in Physics letters. B (01-02-2007)“…We analyze the running gauge coupling at finite temperature for QCD, using the functional renormalization group. The running of the coupling is calculated for…”
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Phase structure of two-flavor QCD at finite chemical potential
Published in Physical review letters (14-01-2011)“…We study the phase diagram of two-flavor QCD at imaginary chemical potentials in the chiral limit. To this end we compute order parameters for chiral symmetry…”
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Speed of sound in dense strong-interaction matter
Published in SciPost physics core (01-04-2024)“…We study the speed of sound in strong-interaction matter at zero temperature and in density regimes which are expected to be governed by the presence of a…”
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On the nature of the phase transition in SU(N), Sp(2) and E(7) Yang–Mills theory
Published in The European physical journal. C, Particles and fields (01-12-2010)“…We study the nature of the confinement phase transition in d =3+1 dimensions in various non-abelian gauge theories with the approach put forward in Phys…”
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Renormalization group consistency and low-energy effective theories
Published in SciPost physics (01-05-2019)“…Low-energy effective theories have been used very successfully to study the low-energy limit of QCD, providing us with results for a plethora of phenomena,…”
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Pairing patterns in one-dimensional spin- and mass-imbalanced Fermi gases
Published in SciPost physics (01-07-2020)“…We study spin- and mass-imbalanced mixtures of spin-1/2 fermions interacting via an attractive contact potential in one spatial dimension. Specifically, we…”
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A lattice pairing-field approach to ultracold Fermi gases
Published in SciPost physics (01-04-2024)“…We develop a pairing-field formalism for ab initio studies of non-relativistic two-component fermions on a (d+1)-dimensional spacetime lattice. More…”
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Finite-size scaling behavior in the O(4) model
Published in The European physical journal. C, Particles and fields (01-10-2009)“…The exact nature of the QCD phase transition has still not been determined conclusively, and there are contradictory results from lattice QCD simulations about…”
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13
QCD-inspired determination of NJL model parameters
Published in EPJ Web of conferences (01-01-2017)“…The QCD phase diagram at finite temperature and density has attracted considerable interest over many decades now, not least because of its relevance for a…”
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Journal Article Conference Proceeding -
14
Renormalised spectral flows
Published in SciPost physics core (04-09-2023)“…We derive renormalised finite functional flow equations for quantum field theories in real and imaginary time that incorporate scale transformations of the…”
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Equation of state of non-relativistic matter from automated perturbation theory and complex Langevin
Published in EPJ Web of conferences (01-01-2018)“…We calculate the pressure and density of polarized non-relativistic systems of two-component fermions coupled via a contact interaction at finite temperature…”
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Journal Article Conference Proceeding -
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Thermal equation of state of polarized fermions in one dimension via complex chemical potentials
Published in Physical review. A, Atomic, molecular, and optical physics (04-12-2015)Get full text
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Algorithmic derivation of functional renormalization group equations and Dyson–Schwinger equations
Published in Computer physics communications (01-06-2012)“…We present the Mathematica application DoFun1 which allows to derive Dyson–Schwinger equations and renormalization group flow equations for n-point functions…”
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18
Quark confinement from colour confinement
Published in Physics letters. B (15-02-2010)“…We relate quark confinement, as measured by the Polyakov-loop order parameter, to colour confinement, as described by the Kugo–Ojima/Gribov–Zwanziger scenario…”
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Effect of fluctuations on the QCD critical point in a finite volume
Published in Physical review. D, Particles, fields, gravitation, and cosmology (11-09-2014)“…We investigate the effect of a finite volume on the critical behavior of the theory of the strong interaction, Quantum Chromodynamics (QCD), by means of a…”
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Finite-Temperature Equation of State of Polarized Fermions at Unitarity
Published in Physical review letters (26-10-2018)“…We study in a nonperturbative fashion the thermodynamics of a unitary Fermi gas over a wide range of temperatures and spin polarizations. To this end, we use…”
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