Quantum vacuum energy for massless conformal scalar field in Einstein and closed Friedmann universes

Özcan, Mustafa


Quantum Hall Effect on Odd-Dimensional Spheres
Kürkcüoğlu, Seçkin (null; 2017-02-10)
Quantum Hall effect on odd spheres
Coskun, U. H.; Kürkcüoğlu, Seçkin; Toga, G. C. (2017-03-22)
We solve the Landau problem for charged particles on odd dimensional spheres S2k-1 in the background of constant SO(2k - 1) gauge fields carrying the irreducible representation (I/2,I/2, . . . , I/2). We determine the spectrum of the Hamiltonian, the degeneracy of the Landau levels and give the eigenstates in terms of the Wigner D-functions, and for odd values of I, the explicit local form of the wave functions in the lowest Landau level (LLL). The spectrum of the Dirac operator on S2k-1 in the same gauge f...
Quantum Graph Neural Networks for Track Reconstruction in Particle Physics and Beyond
Tüysüz, Cenk; Demirköz, Melahat Bilge; Dobos, Daniel; Novotny, Kristiane; Potamianos, Karolos; Carminati, Federico; Vallecorsa, Sofia; Fracas, Fabio; Vlimant, Jeanroch (2020-10-22)
The Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) will undergo an upgrade to further increase the instantaneous rate of particle collisions (luminosity) and become the High Luminosity LHC. This increase in luminosity, will yield many more detector hits (occupancy), and thus measurements will pose a challenge to track reconstruction algorithms being responsible to determine particle trajectories from those hits. Similar challenges exist in non-high energy physics (HEP) ...
Quantum statistical effects on fusion dynamics of heavy ions
Ayik, S; Yilmaz, B; Gokalp, A; Yılmaz, Osman; Takigawa, N (American Physical Society (APS), 2005-05-01)
To describe the fusion of two very heavy nuclei at near barrier energies, a generalized Langevin approach is proposed. The approach incorporates the quantum statistical fluctuations in accordance with the fluctuation and dissipation theorem. It is illustrated that the quantum statistical effects introduce an enhancement of the formation of a compound nucleus, though the quantum enhancement is somewhat less pronounced as indicated in the previous calculations.
Quantum system structures of quantum spaces and entanglement breaking maps
Dosi, A. A. (IOP Publishing, 2019-07-01)
This paper is devoted to the classification of quantum systems among the quantum spaces. In the normed case we obtain a complete solution to the problem when an operator space turns out to be an operator system. The min and max quantizations of a local order are described in terms of the min and max envelopes of the related state spaces. Finally, we characterize min-max-completely positive maps between Archimedean order unit spaces and investigate entanglement breaking maps in the general setting of quantum...
Citation Formats
M. Özcan, “Quantum vacuum energy for massless conformal scalar field in Einstein and closed Friedmann universes,” Middle East Technical University, 1991.