Szabolcs Borsányi
YOU?
Author Swipe
View article: New 4D lattice QCD equation of state: Extended density coverage from a generalized <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> expansion
New 4D lattice QCD equation of state: Extended density coverage from a generalized expansion Open
We present a new equation of state for QCD in which the temperature T and the three chemical potentials for baryon number μB, electric charge μQ, and strangeness μS can be varied independently. This result is based on a generalization of t…
View article: Taste breaking in the minimally doubled Karsten-Wilczek action and its tree-level improvement
Taste breaking in the minimally doubled Karsten-Wilczek action and its tree-level improvement Open
Minimally doubled fermion actions offer a discretization for two-flavor quantum chromodynamics without rooting, but retaining a U(1) chiral symmetry at the same time. The price to pay is a breaking of the hypercubic symmetry, which require…
View article: Dense and magnetized QCD from imaginary chemical potential
Dense and magnetized QCD from imaginary chemical potential Open
In this work, we computed the equation of state of dense QCD in the presence of background magnetic fields using lattice QCD simulations at imaginary baryon chemical potential. Our simulations include 2+1+1 flavors of stout-smeared stagger…
View article: Lattice QCD constraints on the critical point from an improved precision equation of state
Lattice QCD constraints on the critical point from an improved precision equation of state Open
In this Letter we employ lattice simulations to search for the critical point of quantum chromodynamics (QCD). We search for the onset of a first order QCD transition on the phase diagram by following contours of constant entropy density f…
View article: Search for a Lee-Yang edge singularity in high-statistics Wuppertal-Budapest data
Search for a Lee-Yang edge singularity in high-statistics Wuppertal-Budapest data Open
Near a critical endpoint the Lee-Yang edge singularity approaches the real axis in the complex chemical potential plane. In the vicinity of the critical point the functional form of this approach depends on the universality class. Assuming…
View article: Chiral and deconfinement properties of the QCD crossover have a different volume and baryochemical potential dependence
Chiral and deconfinement properties of the QCD crossover have a different volume and baryochemical potential dependence Open
The crossover from hadronic to quark matter is understood to be both a deconfinement as well as a chiral symmetry restoring transition. Here, we study observables related to both aspects using lattice simulations: the Polyakov loop and its…
View article: Portable Lattice QCD implementation based on OpenCL
Portable Lattice QCD implementation based on OpenCL Open
The presence of GPU from different vendors demands the Lattice QCD codes to support multiple architectures. To this end, Open Computing Language (OpenCL) is one of the viable frameworks for writing a portable code. It is of interest to fin…
View article: Taste breaking in the minimally doubled Karsten-Wilczek action and its tree-level improvement
Taste breaking in the minimally doubled Karsten-Wilczek action and its tree-level improvement Open
Minimally doubled fermion actions offer a discretization for two-flavor Quantum Chromodynamics without rooting, but retaining a U(1) chiral symmetry at the same time. The price to pay is a breaking of the hypercubic symmetry, which require…
View article: Portable Lattice QCD implementation based on OpenCL
Portable Lattice QCD implementation based on OpenCL Open
The presence of GPU from different vendors demands the Lattice QCD codes to support multiple architectures. To this end, Open Computing Language (OpenCL) is one of the viable frameworks for writing a portable code. It is of interest to fin…
View article: Search for a Lee-Yang edge singularity in high-statistics Wuppertal-Budapest data
Search for a Lee-Yang edge singularity in high-statistics Wuppertal-Budapest data Open
Near a critical endpoint the Lee-Yang edge singularity approaches the real axis in the complex chemical potential plane. In the vicinity of the critical point the functional form of this approach depends on the universality class. Assuming…
View article: Chiral versus deconfinement properties of the QCD crossover: Differences in the volume and chemical potential dependence from the lattice
Chiral versus deconfinement properties of the QCD crossover: Differences in the volume and chemical potential dependence from the lattice Open
The crossover from hadronic to quark matter is understood to be both a deconfinement as well as a chiral symmetry–restoring transition. The precise definition of these aspects may be ambiguous. Here we use the static quark free energy and …
View article: The QCD crossover line in a finite volume
The QCD crossover line in a finite volume Open
View article: QCD deconfinement transition line up to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mi>B</mml:mi></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>400</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>MeV</mml:mi></mml:mrow></mml:math> from finite volume lattice simulations
QCD deconfinement transition line up to from finite volume lattice simulations Open
The QCD crossover line in the temperature (T)-baryochemical potential (μB) plane has been computed by several lattice groups by calculating the chiral order parameter and its susceptibility at finite values of μB. In this work we focus on …
View article: QCD deconfinement transition line up to $μ_B=400$ MeV from finite volume lattice simulations
QCD deconfinement transition line up to $μ_B=400$ MeV from finite volume lattice simulations Open
The QCD cross-over line in the temperature ($T$) -- baryo-chemical potential ($μ_B$) plane has been computed by several lattice groups by calculating the chiral order parameter and its susceptibility at finite values of $μ_B$. In this work…
View article: Continuum-extrapolated high-order baryon fluctuations
Continuum-extrapolated high-order baryon fluctuations Open
Fluctuations play a key role in the study of QCD phases. Lattice QCD is a valuable tool to calculate them, but going to high orders is challenging. Up to the fourth order, continuum results have been available since 2015. We present the fi…
View article: Chiral and deconfinement properties of the QCD crossover have a different volume and baryochemical potential dependence
Chiral and deconfinement properties of the QCD crossover have a different volume and baryochemical potential dependence Open
The crossover from hadronic to quark matter is understood to be both a deconfinement as well as a chiral symmetry restoring transition. Here, we study observables related to both aspects using lattice simulations: the Polyakov loop and its…
View article: First dynamical simulations with minimally doubled fermions
First dynamical simulations with minimally doubled fermions Open
For thermodynamics studies it is desirable to simulate two degenerate flavors and retain at least a remnant of the chiral symmetry. Staggered fermions can achieve this at the cost of rooting the determinant. Rooting can be avoided using mi…
View article: Renormalization of Karsten-Wilczek Quarks on a Staggered Background
Renormalization of Karsten-Wilczek Quarks on a Staggered Background Open
The Karsten-Wilczek action is a formulation of minimally doubled fermions on the lattice. It explicitly breaks hypercubic symmetry and introduces three counterterms with respective bare parameters. We present a tuning of the bare parameter…
View article: Can rooted staggered fermions describe nonzero baryon density at low temperatures?
Can rooted staggered fermions describe nonzero baryon density at low temperatures? Open
Research on the quantum chromodynamics (QCD) phase diagram with lattice field theory methods is dominated by the use of rooted staggered fermions, as they are the computationally cheapest discretization available. We show that rooted stagg…
View article: The crossover line in the $(T, μ)$-phase diagram of QCD
The crossover line in the $(T, μ)$-phase diagram of QCD Open
An efficient way to study the QCD phase diagram at small finite density is to extrapolate thermodynamical observables from imaginary chemical potential. The phase diagram features a crossover line starting from the transition temperature a…
View article: Renormalization of Karsten-Wilczek Quarks on a Staggered Background
Renormalization of Karsten-Wilczek Quarks on a Staggered Background Open
The Karsten-Wilczek action is a formulation of minimally doubled fermions on the lattice. It explicitly breaks hypercubic symmetry and introduces three counterterms with respective bare parameters. We present a tuning of the bare parameter…
View article: First dynamical simulations with minimally doubled fermions
First dynamical simulations with minimally doubled fermions Open
For thermodynamics studies it is desirable to simulate two degenerate flavors and retain at least a remnant of the chiral symmetry. Staggered fermions can achieve this at the cost of rooting the determinant. Rooting can be avoided using mi…
View article: Finite volume effects near the chiral crossover
Finite volume effects near the chiral crossover Open
The effect of a finite volume presents itself both in heavy ion experiments as well as in recent model calculations. The magnitude is sensitive to the proximity of a nearby critical point. We calculate the finite volume effects at finite t…
View article: Equation of state of a hot-and-dense quark gluon plasma: Lattice simulations at real <i>μ<sub>B</sub></i> vs. extrapolations
Equation of state of a hot-and-dense quark gluon plasma: Lattice simulations at real <i>μ<sub>B</sub></i> vs. extrapolations Open
The equation of state of the quark gluon plasma is a key ingredient of heavy ion phenomenology. In addition to the traditional Taylor method, several novel approximation schemes have been proposed with the aim of calculating it at finite b…
View article: High order fluctuations of conserved charges in the continuum limit
High order fluctuations of conserved charges in the continuum limit Open
We calculate the grand canonical fluctuations of the net baryon number and net strangeness in the region of chiral crossover from lattice QCD. We continuum extrapolate the results in a finite volume using the new 4HEX discretization scheme…
View article: QCD equation of state with improved precision from lattice simulations
QCD equation of state with improved precision from lattice simulations Open
The equation of state of Quantum Chromodynamics has been in recent years the focus of intense effort from first principle methods, mostly lattice simulations, with particular interest to the finite baryon density regime. Because of the sig…
View article: Finite volume effects near the chiral crossover
Finite volume effects near the chiral crossover Open
\nThe effect of a finite volume presents itself both in heavy ion experiments as well as in recent model calculations. The magnitude is sensitive to the proximity of a nearby critical point. We calculate the finite volume effects at finite…
View article: QCD equation of state in the presence of magnetic fields at low density
QCD equation of state in the presence of magnetic fields at low density Open
Peripheral heavy-ion collisions are expected to exhibit magnetic fields with magnitudes comparable to the QCD scale, as well as non-zero baryon densities. Whereas QCD at finite magnetic fields can be simulated directly with standard lattic…
View article: Staggered rooting and unphysical phases at finite baryon density
Staggered rooting and unphysical phases at finite baryon density Open
Research on the QCD phase diagram with lattice field theory methods is dominated by the use of rooted staggered fermions, as they are the computationally cheapest discretization available. We show that rooted staggered fermions at a nonzer…
View article: QCD equation of state in the presence of magnetic fields at low density
QCD equation of state in the presence of magnetic fields at low density Open
Peripheral heavy-ion collisions are expected to exhibit magnetic fields with magnitudes comparable to the QCD scale, as well as non-zero baryon densities. Whereas QCD at finite magnetic fields can be simulated directly with standard lattic…