Results 61 to 70 of about 189,255 (150)

Thermal dilepton production in heavy-ion collisions at beam-energy-scan (BES) energies [PDF]

open access: yesEPJ Web of Conferences
The lepton pair production rate at finite temperature and at nextto-leading-order (NLO) is calculated for quark-gluon plasma at non-zero net baryon density.
Churchill Jessica   +6 more
doaj   +1 more source

Fate of the η′ in the quark gluon plasma

open access: yesPhysics Letters B, 2019
In this paper we study the η′ in Nf=2+1+1 lattice QCD simulations at finite temperature. Results are obtained from the analysis of the gluonic defined topological charge density correlator after gradient flow.
Andrey Yu. Kotov   +2 more
doaj   +1 more source

Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region

open access: yesJournal of High Energy Physics
We present the first determination of the topological susceptibility from lattice QCD in the presence of strong background magnetic fields. Our simulations employ 2+1 flavours of stout-improved staggered quarks with physical masses and cover a broad ...
B. B. Brandt   +3 more
doaj   +1 more source

New insights into axion freeze-in

open access: yesJournal of High Energy Physics
Freeze-in via the axion-photon coupling, g ϕγ , can produce axions in the early Universe. At low reheating temperatures close to the minimum allowed value T reh ≈ T BBN ≈ 10 MeV, the abundance peaks for axion masses m ϕ ≈ T reh.
Mudit Jain   +3 more
doaj   +1 more source

The chiral separation effect from lattice QCD at the physical point

open access: yesJournal of High Energy Physics
In this paper we study the Chiral Separation Effect by means of first-principles lattice QCD simulations. For the first time in the literature, we determine the continuum limit of the associated conductivity using 2+1 flavors of dynamical staggered ...
B. B. Brandt   +3 more
doaj   +1 more source

Quantum decoherence in the Caldeira-Leggett model by the real-time path integral on a computer

open access: yesJournal of High Energy Physics
We propose first-principle calculations of an open system based on the real-time path integral formalism treating the environment as well as the system of our interest together on a computer.
Jun Nishimura, Hiromasa Watanabe
doaj   +1 more source

Impact of biased cooling on the operation of undoped silicon quantum well field-effect devices

open access: yesAIP Advances
Gate-tunable semiconductor nanosystems are getting more and more important in the realization of quantum circuits. While such devices are typically cooled to operation temperature with zero bias applied to the gate, biased cooling corresponds to a non ...
Laura K. Diebel   +6 more
doaj   +1 more source

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