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Astronomy & Astrophysics
D. Bollweg, J. Goswami, O. Kaczmarek, F. Karsch, Swagato Mukherjee, P. Petreczky, C. Schmidt, P. Scior
Summary: This study updates lattice QCD results for second order cumulants of conserved charge fluctuations and correlations, comparing them to hadron resonance gas calculations and S-matrix results to characterize thermal conditions near the pseudocritical line of the chiral transition in QCD. The study finds that the ratio of strange to baryon chemical potentials is a robust observable that is sensitive to the spectrum of strange baryon resonances.
Article
Astronomy & Astrophysics
A. Gomez Nicola, A. Vioque-Rodriguez
Summary: This study revisits chiral perturbation theory at nonzero isospin chemical potential and discusses the effects of new terms and corrections on the free energy density and related observables. The results are consistent with lattice results and support nonzero values for certain low-energy constants. Additionally, an additional constraint is found to preserve a physical condition.
Article
Astronomy & Astrophysics
Sabarnya Mitra, Prasad Hegde, Christian Schmidt
Summary: The paper presents a new method to calculate the QCD equation of state based on the cumulant expansion and compares it with other expansion methods. The proposed resummation technique eliminates the bias in the exponential factor, leading to improved convergence.
Article
Physics, Multidisciplinary
Zohreh Davoudi, Niklas Mueller, Connor Powers
Summary: This article proposes a method for thermodynamic studies of gauge theories using thermal pure quantum states. It overcomes the sign problem in traditional methods by utilizing pure thermal quantum states, and successfully determines the phase diagram of a simple low-dimensional gauge theory, including the chiral phase transition at finite temperature and chemical potential. The article also discusses quantum algorithms, resource requirements, and algorithmic and hardware error analysis, providing motivation for future implementations.
PHYSICAL REVIEW LETTERS
(2023)
Article
Astronomy & Astrophysics
T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov
Summary: This paper investigates the influence of chiral chemical potential on the phenomenon of diquark condensation and phase structure of dense quark matter. The results show that the chiral chemical potential exhibits distinct features compared to other chemical potentials.
Article
Astronomy & Astrophysics
Luis Altenkort, Alexander M. Eller, O. Kaczmarek, Lukas Mazur, Guy D. Moore, Hai-Tao Shu
Summary: The proposed method significantly improves the signal-to-noise ratio of lattice correlation functions for bosonic operators by breaking each plane into bins and computing bin-bin correlations. Experimental results show noise reductions of around 3-7 times compared to the conventional approach on the same ensemble of configurations.
Article
Multidisciplinary Sciences
Gargee Chakraborty, Surajit Chattopadhyay, Ertan Gudekli, Irina Radinschi
Summary: This study investigates the cosmological consequences and thermodynamics of Barrow holographic dark energy (HDE), incorporating viscosity and reconstructions of parameters associated with Barrow HDE. Observations of quintessence and quintom behavior, as well as the validity of the generalized second law of thermodynamics, are reported. The study demonstrates the physical viability of considering Barrow HDE as a specific case of NO HDE but concludes that the model is limited to being very close to ΛCDM and cannot go beyond it.
Article
Astronomy & Astrophysics
Marco Ce, Tim Harris, Ardit Krasniqi, Harvey B. Meyer, Csaba Toeroek
Summary: We investigate various aspects of chiral symmetry in QCD at T = 128 MeV using a 24 x 963 lattice-QCD ensemble with O(a)-improved Wilson quarks and physical up, down, and strange quark masses. The pion quasiparticle is found to be significantly lighter than the zero-temperature pion mass, despite having a shorter static correlation length. Our findings are quantitatively compared to predictions of chiral perturbation theory. Among several order parameters for chiral symmetry restoration, we compute the reduction of the difference between the vector- and axial-vector time-dependent correlators, which is found to be about two-thirds compared to its vacuum counterpart.
Article
Environmental Sciences
Wenbing Zhang, Wenbo Rao, Hong Ye, Yiyan Lv, Lipei Zhou, Xin Xiong
Summary: Soil-bentonite cut-off walls are commonly used for landfill pollution control, but they are not chemically compatible with landfill leachate. Attapulgite can be used as a substitute for bentonite in landfill cut-off walls. However, the chemical compatibility of attapulgite cut-off walls and leachate is not well understood. This study experimentally investigated the chemical compatibility of attapulgite cut-off wall specimens with organic and inorganic contaminants and found that a sand-attapulgite cut-off wall has good chemical compatibility with organic contaminants.
Article
Physics, Nuclear
Jia-Jie Jiang, Ya-Zhao Xiao, Jiajia Qin, Xiaohua Li, Xun Chen
Summary: This paper uses gauge/gravity duality to study the potential energy and melting of triply heavy baryons at finite temperature and chemical potential. The three-quark potential is calculated and compared with the quark-antiquark potential, showing that the potential energy decreases at large distances with increasing temperature and chemical potential. It is found that the three-quark potential has an endpoint at high temperature and/or large chemical potential, indicating the melting of triply heavy baryons at sufficiently high temperature and/or large chemical potential. The screening distance extracted from the three-quark potential is also discussed and a melting diagram of triply heavy baryons is presented in the T-mu plane.
Article
Energy & Fuels
Victor Purnomo, Ivana Stanicic, Daofeng Mei, Amir H. Soleimanisalim, Tobias Mattisson, Magnus Ryden, Henrik Leion
Summary: Iron sand, a by-product of the industry, has a reasonable iron content and low cost. It has been found that iron sand can be used as an oxygen carrier in chemical looping gasification (CLG), with an oxygen transfer capacity lower than ilmenite. Utilizing iron sand leads to higher conversion rates of pine forest residue char to CO and H2 compared to ilmenite. The study also presents novel findings on the crystalline phase transformation of iron sand at different oxidation levels.
Article
Astronomy & Astrophysics
Yui Hayashi, Kei-Ichi Kondo
Summary: The study presents a detailed analysis of the gluon propagator at nonzero quark chemical potential in the long-wavelength limit, focusing on the complex poles and their appearance depending on the chemical potential value. It also discusses the uniqueness of analytic continuation of the Matsubara propagator to a certain class of functions with a finite number of complex poles and singularities on the real axis.
Article
Physics, Nuclear
G. Bozkir, A. Turkan, K. Azizi
Summary: In this study, we investigate the spectroscopic properties of the strange particle kaon in the framework of hot and dense QCD. Our numerical results demonstrate that the mass of the particle increases considerably with increasing baryon chemical potential up to a certain point, and then starts to decrease. The decay constant decreases with respect to baryon chemical potential up to a certain point, and then starts to increase at finite temperatures. Regarding the temperature dependence, the mass and decay constant remain roughly unchanged up to a certain temperature, and then the mass starts to fall and the decay constant starts to rise up to a critical temperature. The obtained results at zero temperature and baryon chemical potential are consistent with existing experimental data. The observations are consistent with the QCD phase diagram in the T - mu(B) plane.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Physics, Particles & Fields
Alexander Lehmann, Alexander Rothkopf
Summary: The paper computes the real-time interaction potential between a static quark and antiquark in classical lattice gauge theory at finite temperature and determines the screened real part of this potential while confirming the presence of an imaginary part. The real part is closely related to the back-reaction of static sources onto the gauge fields, which is incorporated via Gauss's law. Differences in the treatment of static sources in quantum and classical lattice gauge theory are also discussed.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Swagato Mukherjee, Vladimir Skokov
Summary: Recent lattice QCD calculations suggest that the chiral crossover at zero baryon chemical potential is a remnant of the second order chiral phase transition. Universal properties of this phase transition can be mapped to QCD temperature and chemical potential using nonuniversal parameters determined by lattice QCD. These results provide tight constraints on the validity range of lattice QCD calculations at nonzero baryon chemical potential.
Article
Physics, Nuclear
F. Karsch, A. Bazavov, H. -T. Ding, P. Hegde, O. Kaczmarek, E. Laermann, Swagato Mukherjee, H. Ohno, P. Petreczky, C. Schmidt, S. Sharma, W. Soeldner, P. Steinbrecher, M. Wagner
Article
Physics, Nuclear
Prasad Hegde
Article
Physics, Nuclear
Christian Schmidt
Article
Physics, Nuclear
H. -T. Ding, P. Hegde, F. Karsch, A. Lahiri, S. -T. Li, S. Mukherjee, P. Petreczky
Article
Astronomy & Astrophysics
A. Bazavov, H-T Ding, R. Hegde, O. Kaczmarek, F. Karsch, N. Karthik, E. Laermann, Anirban Lahiri, R. Larsen, S-T Li, Swagato Mukherjee, H. Ohno, R. Petreczky, H. Sandmeyer, C. Schmidt, S. Sharma, R. Steinbrecher
Article
Physics, Multidisciplinary
H. -T. Ding, P. Hegde, O. Kaczmarek, F. Karsch, Anirban Lahiri, S. -T. Li, Swagato Mukherjee, H. Ohno, P. Petreczky, C. Schmidt, P. Steinbrecher
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Sourav Mondal, Swagato Mukherjee, Prasad Hegde
Summary: This article introduces a resummation scheme for the Taylor expansion of the QCD equation of state, which is based on the n-point correlation functions of the conserved current. It is applied to lattice QCD calculations and shows improved convergence compared to the traditional Taylor expansion. The resummed version also reflects the zeros of the partition function and the severity of the sign problem.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Sabarnya Mitra, Prasad Hegde, Christian Schmidt
Summary: The paper presents a new method to calculate the QCD equation of state based on the cumulant expansion and compares it with other expansion methods. The proposed resummation technique eliminates the bias in the exponential factor, leading to improved convergence.
Article
Astronomy & Astrophysics
Lorenzo Dini, Prasad Hegde, Frithjof Karsch, Anirban Lahiri, Christian Schmidt, Sipaz Sharma
Summary: In this study, we analyze the pseudocritical behavior and chiral phase transition temperature of three-flavor QCD using lattice quantum chromodynamics. The results show the occurrence of a second order chiral phase transition at zero quark masses and determine the chiral phase transition temperature at a finite lattice spacing. Moreover, the analysis suggests that the extrapolated chiral phase transition temperature in three-flavor QCD is below 90 MeV.
Article
Astronomy & Astrophysics
A. Bazavov, D. Bollweg, H-T Ding, P. Enns, J. Goswami, P. Hegde, O. Kaczmarek, F. Karsch, R. Larsen, Swagato Mukherjee, H. Ohno, P. Petreczky, C. Schmidt, S. Sharma, P. Steinbrecher
Article
Astronomy & Astrophysics
A. Bazavov, S. Dentinger, H-T Ding, P. Hegde, O. Kaczmarek, F. Karsch, E. Laermann, Anirban Lahiri, Swagato Mukherjee, H. Ohno, P. Petreczky, R. Thakkar, H. Sandmeyer, C. Schmidt, S. Sharma, P. Steinbrecher
Article
Astronomy & Astrophysics
A. Bazavov, H. -T. Ding, P. Hegde, O. Kaczmarek, F. Karsch, E. Laermann, Swagato Mukherjee, H. Ohno, P. Petreczky, E. Rinaldi, H. Sandmeyer, C. Schmidt, Chris Schroeder, S. Sharma, W. Soeldner, R. A. Soltz, P. Steinbrecher, P. M. Vranas
Article
Astronomy & Astrophysics
A. Bazavov, H. -T. Ding, P. Hegde, F. Karsch, E. Laermann, Swagato Mukherjee, P. Petreczky, C. Schmidt
Article
Astronomy & Astrophysics
A. Bazavov, H. -T. Ding, P. Hegde, O. Kaczmarek, F. Karsch, E. Laermann, Y. Maezawa, Swagato Mukherjee, H. Ohno, P. Petreczky, H. Sandmeyer, P. Steinbrecher, C. Schmidt, S. Sharma, W. Soeldner, M. Wagner
Article
Astronomy & Astrophysics
A. Bazavov, H. -T. Ding, P. Hegde, O. Kaczmarek, F. Karsch, E. Laermann, Swagato Mukherjee, H. Ohno, P. Petreczky, C. Schmidt, S. Sharma, W. Soeldner, M. Wagner