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Transition Temperature of Two-Degenerate-Flavour QCD in the Chiral Limit

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Chinese Physics Letters 2007年第10期24卷 2769-2772页

作者：吴良凯罗向前 School of Physics and Engineering Zhongshan (Sun Yat-Sen) University Guangzhou 510275

We present the results for the transition temperature of quantum chromodynamics （QCD） with two degenerate flavours （Nf = 2） of Wilson quarks. On lattice 8^3 × 4 with 4 representing the temporal extent, by using the Ferrenberg-Swendsen reweighting method, we determine the critical β = 6/g^2 where the transition occurs, g is the coupling constant. On lattice 8^2 × 20 × 4, by using the axial vector Ward-Takahashi identity, we calculate the current quark mass amq, a is the lattice spacing. Assuming the O（4） scaling, the critical β in the chiral limit is determined. We calculate the p meson mass amp at zero temperature on lattice 8^3 × 20. By using the experimental p meson mass to set the scale, we obtain 194（1） MeV for the transition temperature in the chiral limit.

关键词： PHASE-TRANSITION WILSON QUARKS 2-FLAVOR QCD LATTICE THERMODYNAMICS chromodynamics SYMMETRY

Determination of bilocal field in GCM theory and calculation of some properties of mesons

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Science China Mathematics 1997年第8期40卷 860-867页

作者：吕晓芙刘玉鑫赵恩广 Department of Physics Sichuan UniversityChengdu 610064China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080China Department of Physics Peking UniversityBeijing 100871China

Through theoretical derivation,the vacuum configuration of the bilocal field in GCM is equivalent to dynamical mass of *** the approximation of instanton dilute liquid,an analytical expression for the vacuum configuration is *** on it,the decay constants and masses of π and σ mesons are *** results are much more improved than those given by the previous GCM calculations.

关键词： quantum chromodynamics GCM theory bilocal field vacuum configuration meson property.

Lithium Quantum Consciousness

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Journal of Quantum Information Science 2017年第4期7卷 125-139页

作者： Angus McCoss Kilbrandon House Scotland UK

Conscious agency is considered to be founded upon a quantum state of mind . An original synthesis, called “Lithium Quantum Consciousness” (LQC), proposes that this quantum state utilises lithium-6 (spin-1) qutrit nuclear magnetic resonance (NMR) quantum information processing (QIP) in the connectome (brain-graph). In parallel to the connectome’s processing of physiological controls, perception, cognition and intelligence via quantum electrodynamics (QED), the connectome also functions via its dynamic algebraic topology as a unitary transceiver antenna laced with lithium-6 nuclei which are spin-entangled with each other and with the environmental vortical gluon field via quantum chromodynamics (QCD). This unitary antenna (connectome) bestows the self its unity of consciousness within an intertwined-history multi-agent environment. An equivalence is proposed between Whitehead’s occasions of experience and topological spacetime instantons in the vortical gluon field. Topological spacetime instantons pervade the vortical gluon field in a quantum information network of vortex interactions, herein termed the “instanton-net”, or “Instanet” [sic]. The fermionic isotope lithium-6 has a very low nuclear binding energy and the smallest non-zero nuclear electric quadrupole moment of any stable nucleus making it susceptible to quantum chromodynamic (QCD) interaction with the vortical gluon field and ideal for spin-1 qutrit NMR-QIP. The compact spherical atomic orbital of lithium provides ideal rotational freedom inside tetrahedral water cages in organo6Li+(H2O)4 within which the lithium nucleus rapidly tumbles for NMR motional narrowing and long decoherence times. Nuclear spin-entanglement, among water-caged lithium-6 nuclei in the connectome, is a spin-1 qutrit NMR-QIP resource for conscious agency. By contrast, similar tetrahedral xenon cages in organo6Li+Xe4 excimers are postulated to decohere the connectome’s NMR-QIP due to xenon’s NMR signal being extremely sensitive to its

关键词： Instanton Qutrit Artificial Intelligence Quantum chromodynamics Connectome

Glitching Pulsars: Unraveling the Interactions of General Relativistic and Quantum Fields in the Strong Field Regimes

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Journal of Modern Physics 2019年第14期10卷 1696-1712页

作者： Ahmad A. Hujeirat Ravi Samtaney IWR Universität Heidelberg Heidelberg Germany Applied Mathematics and Computational Science KAUST Thuwal Jeddah KSA

In this article we modify our previous model for the mechanisms underlying the glitch phenomena in pulsars. Accordingly, pulsars are born with embryonic cores that are made of purely incompressible superconducting gluon-quark superfluid (henceforth SuSu-cores). As the ambient medium cools and spins down due to emission of magnetic dipole radiation, the mass and size of SuSu-cores must grow discretely with time, in accordance with the Onsager-Feynmann analysis of superfluidity. Here we argue that the spacetime embedding glitching pulsars is dynamical and of bimetric nature: inside SuSu-cores the spacetime must be flat, whereas the surrounding region, where the matter is compressible and dissipative, the spacetime is Schwarzschild. It is argued here that the topological change of spacetime is derived by the strong nuclear force, whose operating length scales are found to increase with time to reach O (1) cm at the end of the luminous lifetimes of pulsars. The here-presented model is in line with the recent radio- and gravitational wave observations of pulsars and merger of neutron stars.

关键词： Relativity: Numerical General Black Hole Physics Magnetars Neutron Stars Pulsars Superfluidity Superconductivity Gluons Quarks Quantum chromodynamics (QCD)

How Massive Are the Superfluid Cores in the Crab and Vela Pulsars and Why Their Glitch-Events Are Accompanied with under and Overshootings?

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Journal of Modern Physics 2020年第3期11卷 395-406页

作者： A. A. Hujeirat R. Samtaney IWR Universit?t Heidelberg Heidelberg Germany Applied Mathematics and Computational Science CEMSE Division KAUST Thuwal KSA

The Crab and Vela are well-studied glitching pulsars and the data obtained so far should enable us to test the reliability of models of their internal structures. Very recently it was proposed that glitching pulsars are embedded in bimetric spacetime: their incompressible superfluid cores (SuSu-cores) are embedded in flat spacetime, whereas the ambient compressible and dissipative media are enclosed in Schwarzschild spacetime. In this letter we apply this model to the Crab and Vela pulsars and show that a newly born pulsar initially of and an embryonic SuSu-core of could evolve into a Crab-like pulsar after 1000 years and into a Vela-like pulsar 10,000 years later to finally fade away as an invisible dark energy object after roughly 10 Myr. Based thereon we infer that the Crab and the Vela pulsars should have SuSu-cores of and , respectively. Furthermore, the under- and overshootings phenomena observed to accompany the glitch events of the Vela pulsar are rather a common phenomenon of glitching pulsars that can be well-explained within the framework of bimetric spacetime.

关键词： Relativity: Numerical General Black Hole Physics Magnetars Neutron Stars Pulsars Superfluidity Superconductivity Gluons Quarks Quantum chromodynamics (QCD)

Calculation of fo and m_σ in a QCD-Based Model Field Theory

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Chinese journal of nuclear physics 1996年第3期 133-136页

作者： L Xiaofu~(1,2,4) Liu Yuxin~(1,3,4) Zhao Enguang~(1,4)1 CCAST(Warld Lab),P.O.Box 8730,Beijng 1000802 Department fo Physics,Sichuan,University,Chengdu 6100643 Department of Physics,Peking Uuiversity,Beijingg 1008714 Institute of Theoretical Physics,the Chinese Acodemy of Sciences,P.O.Box 2735,Beijing 100080

With the recently obtained vacuum configuration of the bilocal field,we discuss the decay con-stant f_σ and m_σ of σ-meson in a quantum chromodynamics(QCD)-based model field *** of f_σ and m_σ are obtained.

关键词： —σ-meson Decay constant Quantum chromodynamics

Hamiltonian, Path Integral and BRST Formulations of the Restricted Gauge Theory of QCD2

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Journal of Modern Physics 2018年第14期9卷 2355-2369页

作者： Usha Kulshreshtha Daya Shankar Kulshreshtha James P. Vary Department of Physics Kirori Mal College University of Delhi Delhi India Department of Physics and Astrophysics University of Delhi Delhi India Department of Physics and Astronomy Iowa State University Ames Iowa USA

We study the Hamiltonian, path integral and Becchi-Rouet-Stora and Tyutin (BRST) formulations of the restricted gauge theory of QCD2 à la Cho et al. under appropriate gauge-fixing conditions.

关键词： Hamiltonian Quantization Path Integral Quantization BRST Quantization Quantum chromodynamics QCD2 Field Theories in Lower Dimensions Gauge-Invariant Theories Gauge-Fixing