- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Physics of Superconductivity and Magnetism
- Cold Atom Physics and Bose-Einstein Condensates
- Theoretical and Computational Physics
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Black Holes and Theoretical Physics
- Pulsars and Gravitational Waves Research
- High-pressure geophysics and materials
- Nonlinear Dynamics and Pattern Formation
- Quantum and electron transport phenomena
- Nonlinear Optical Materials Research
- Particle accelerators and beam dynamics
- Spectroscopy and Laser Applications
- Nutritional Studies and Diet
- Quantum Computing Algorithms and Architecture
- Electrowetting and Microfluidic Technologies
- Photochemistry and Electron Transfer Studies
- Chemical Thermodynamics and Molecular Structure
- Rare-earth and actinide compounds
- Quantum, superfluid, helium dynamics
Central China Normal University
2016-2025
Brookhaven National Laboratory
2010-2024
Argonne National Laboratory
2023-2024
Eötvös Loránd University
2022
Bielefeld University
2009-2020
Institute of Modern Physics
2020
Chinese Academy of Sciences
2020
University of Tsukuba
2016-2020
Michigan State University
2019
Indian Institute of Science Bangalore
2019
We present results on the chiral and deconfinement properties of QCD transition at finite temperature. Calculations are performed with 2+1 flavors quarks using p4, asqtad HISQ/tree actions. Lattices temporal extent N_tau=6, 8 12 used to understand control discretization errors reliably extrapolate estimates obtained lattice spacings continuum limit. The temperature is defined in terms phase a theory two massless analyzed O(N) scaling fits condensate susceptibility. find consistent from...
We present results for the equation of state in (2+1)-flavor QCD using highly improved staggered quark action and lattices with temporal extent $N_{\tau}=6,~8,~10$, $12$. show that these data can be reliably extrapolated to continuum limit obtain a number thermodynamic quantities speed sound temperature range $(130-400)$ MeV. compare our previous calculations, provide an analytic parameterization pressure, from which other calculated, use phenomenology. energy density crossover region, $145~...
We present results for pseudo-critical temperatures of QCD chiral crossovers at zero and non-zero values baryon ($B$), strangeness ($S$), electric charge ($Q$), isospin ($I$) chemical potentials $μ_{X=B,Q,S,I}$. The were obtained using lattice calculations carried out with two degenerate up down dynamical quarks a strange quark, quark masses corresponding to physical pion kaon in the continuum limit. By parameterizing as $ T_c(μ_X) = T_c(0) \left[ 1 -κ_2^{X}(μ_{X}/T_c(0))^2...
We report on the first lattice calculation of QCD phase transition using chiral fermions with physical quark masses. This uses 2+1 flavors, spatial volumes between (4 fm)(3) and (11 temperatures 139 196 MeV. Each temperature is calculated at a single spacing corresponding to temporal Euclidean extent N(t) = 8. The disconnected susceptibility, χ(disc) shows pronounced peak whose position height depend sensitively mass. find no metastability near which does not change when 5 fm increased 10...
We calculated the QCD equation of state using Taylor expansions that include contributions from up to sixth order in baryon, strangeness and electric charge chemical potentials. Calculations have been performed with Highly Improved Staggered Quark action temperature range $T\in [135~{\rm MeV}, 330~{\rm MeV}]$ four different sets lattice cut-offs corresponding lattices size $N_\sigma^3\times N_\tau$ aspect ratio $N_\sigma/N_\tau=4$ $N_\tau =6-16$. The strange quark mass is tuned its physical...
We calculate the quadratic fluctuations of net baryon number, electric charge and strangeness as well correlations among these conserved charges in ($2+1$)-flavor lattice QCD at zero chemical potential. Results are obtained using calculations with tree-level improved gauge highly staggered quark actions almost physical light strange masses three different values cutoff. Our choice parameters corresponds to a value 160 MeV for lightest pseudoscalar Goldstone mass kaon mass. The diagonal...
We review results from lattice QCD calculations on the thermodynamics of strong-interaction matter with emphasis input these can provide to exploration phase diagram and properties hot dense created in heavy ion experiments. This is organized sections as follows: (1) Introduction, (2) lattice, (3) at high temperature, (4) Bulk thermodynamics, (5) Fluctuations conserved charges, (6) Transport properties, (7) Open flavors quarkonia, (8) external magnetic fields, (9) Summary.
This writeup is a compilation of the predictions for forthcoming Heavy Ion Program at Large Hadron Collider, as presented CERN Theory Institute 'Heavy Collisions LHC - Last Call Predictions', held from May 14th to June 10th 2007.
We calculate the vector current correlation function for light valence quarks in deconfined phase of QCD. The calculations have been performed quenched lattice QCD at T=1.45 Tc four values cut-off on lattices up to size 128^3x48. This allows perform a continuum extrapolation Euclidean time interval tau*T -in [0.2, 0.5], which extends largest temporal separations possible finite temperature, better than 1% accuracy. In this interval, value temperature investigated, we find that never deviates...
We present a determination of freeze-out conditions in heavy ion collisions based on ratios cumulants net electric charge fluctuations. These can reliably be calculated lattice QCD for wide range chemical potential values by using next-to-leading order Taylor series expansion around the limit vanishing baryon, and strangeness potentials. From computation up to fourth correlations we first determine potentials that characterize collision confirm temperature $150\text{ }\text{...
We compare lattice QCD results for appropriate combinations of net strangeness fluctuations and their correlations with baryon number predictions from two hadron resonance gas (HRG) models having different strange content. The conventionally used HRG model based on experimentally established hadrons fails to describe the in hadronic phase close crossover. Supplementing conventional additional, uncharted predicted by quark calculations observed spectrum leads good descriptions thermodynamics...
We present a lattice-QCD-based determination of the chiral phase transition temperature in QCD with two degenerate, massless quarks and physical strange quark mass using lattice calculations highly improved staggered action. propose calculate novel estimators for several values light masses, corresponding to Goldstone pion masses range $58\text{ }\text{ }\mathrm{MeV}\ensuremath{\lesssim}{m}_{\ensuremath{\pi}}\ensuremath{\lesssim}163\text{ }\mathrm{MeV}$. The is determined by extrapolating...
We present new results on up to $6^{th}$ order cumulants of net baryon-number fluctuations at small values the baryon chemical potential, $\mu_B$, obtained in lattice QCD calculations with physical light and strange quark masses. Representation Taylor expansions higher terms ratio two lowest cumulants, $M_B/\sigma_B^2=\chi_1^B(T,\mu_B)/\chi_2^B(T,\mu_B)$, allows for a parameter free comparison data proton-number by STAR Collaboration Beam Energy Scan RHIC. show that recent high statistics...
We study the properties of charmonium states at finite temperature in quenched QCD on large and fine isotropic lattices. perform a detailed analysis correlation spectral functions both below above ${T}_{c}$. Our suggests that $S$ wave ($J/\ensuremath{\psi}$ ${\ensuremath{\eta}}_{c}$) $P$ (${\ensuremath{\chi}}_{c0}$ ${\ensuremath{\chi}}_{c1}$) disappear already about $1.5{T}_{c}$. The charm diffusion coefficient is estimated through Kubo formula found to be compatible with zero ${T}_{c}$...
We present results on both the restoration of spontaneously broken chiral symmetry and effective anomalously U(1)_A in finite temperature QCD at zero chemical potential using lattice QCD. employ domain wall fermions lattices with fixed temporal extent N_\tau = 8 spatial N_\sigma 16 a range T 139 - 195 MeV, corresponding to spacings \approx 0.12 0.18 fm. In these calculations, we include two degenerate light quarks strange quark pion mass m_\pi 200 MeV. The is set near its physical value....
We report on a study of the finite-temperature QCD transition region for temperatures between 139 and 196 MeV, with pion mass 200 MeV two space-time volumes: $2{4}^{3}\ifmmode\times\else\texttimes\fi{}8$ $3{2}^{3}\ifmmode\times\else\texttimes\fi{}8$, where larger volume varies in linear size 5.6 fm (at $T=139\text{ }\text{ }\mathrm{MeV}$) 4.0 $T=195\text{ }\mathrm{MeV}$). These results are compared an earlier calculation using same action quark masses but smaller,...
Appropriate combinations of up to fourth order cumulants net strangeness fluctuations and their correlations with baryon number electric charge fluctuations, obtained from lattice QCD calculations, have been used probe the carrying degrees freedom at high temperatures. For temperatures chiral crossover, separate contributions strange mesons baryons can be well described by an uncorrelated gas hadrons. Such a description breaks down in crossover region, suggesting that deconfinement takes...
We study the free energy of a static quark in QCD with $2+1$ flavors wide temperature region, $116\text{ }\text{ }\mathrm{MeV}<T<5814\text{ }\mathrm{MeV}$, using highly improved staggered (HISQ) action. analyze transition region detail, obtain entropy quark, show that it peaks at temperatures close to chiral crossover and also revisit dependence Polyakov loop susceptibilities gradient flow. discuss implications our findings for deconfinement phenomena physical values masses. Finally...
We present continuum extrapolated lattice QCD results for up to fourth-order diagonal and off-diagonal quark number susceptibilities in the high temperature region of 300--700 MeV. Lattice calculations are performed using $2+1$ flavors highly improved staggered quarks with nearly physical masses at four different spacings. Comparisons our recent weak coupling yield reasonably good agreements entire range.
Ratios of cumulants conserved net charge fluctuations are sensitive to the degrees freedom that carriers corresponding quantum numbers in different phases strong interaction matter. Using lattice QCD with 2+1 dynamical flavors and quenched charm quarks we calculate second fourth order their correlations other charges such as baryon number, electric strangeness. Analyzing appropriate ratios these probe nature charmed vicinity chiral crossover region. We show for temperatures above transition...
We present lattice QCD results for mesonic screening masses in the temperature range $140\text{ }\text{ }\mathrm{MeV}\ensuremath{\lesssim}T\ensuremath{\lesssim}2500\text{ }\mathrm{MeV}$. Our calculations were carried out using ($2+1$) flavors of highly improved staggered quark action, with a physical value strange mass and two values light corresponding to pion 160 140 MeV. Continuum-extrapolated obtained variety spacings temporal extents ${N}_{\ensuremath{\tau}}=6--16$. discuss implications...
We introduce novel relations between the derivatives [$\partial^{n}\rho(\lambda, m_{l})/\partial m_{l}^n$] of Dirac eigenvalue spectrum [$\rho(\lambda, m_{l})$] with respect to light sea quark mass ($m_{l}$) and $(n+1)$-point correlations among eigenvalues ($\lambda$) massless operator. Using these we present lattice QCD results for $\partial^{n}\rho(\lambda, m_{l}^n$ ($n=1, 2, 3$) $m_{l}$ corresponding pion masses $m_\pi=160-55$ MeV, at a temperature about 1.6 times chiral phase transition...
The correlation between net baryon number and electric charge, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msubsup><a:mrow><a:mi>χ</a:mi></a:mrow><a:mrow><a:mn>11</a:mn></a:mrow><a:mrow><a:mi>BQ</a:mi></a:mrow></a:msubsup></a:mrow></a:math>, can serve as a magnetometer of QCD. This is demonstrated by lattice QCD computations using the highly improved staggered quarks with physical pion mass <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
A bstract In this work, we report a lattice calculation of x -dependent valence pion generalized parton distributions (GPDs) at zero skewness with multiple values the momentum transfer − t . The calculations are based on an N f = 2 + 1 gauge ensemble highly improved staggered quarks Wilson-Clover fermion. spacing is 0.04 fm, and mass tuned to be 300 MeV. We determine Lorentz-invariant amplitudes quasi-GPD matrix elements for both symmetric asymmetric momenta transfers similar show...
We present results for the ratios of mean ($M_B$), variance ($\sigma_B^2$), skewness ($S_B)$ and kurtosis ($\kappa_B$) net baryon-number fluctuations obtained in lattice QCD calculations with a physical light to strange quark mass ratio. Using next-to-leading order Taylor expansions baryon chemical potential we find that qualitative features these closely resemble corresponding experimentally measured cumulants proton-number beam energies down $\sqrt{s_{_{NN}}} \ge 19.6$ GeV. show difference...