Dr. Dragos Anghel
fractional exclusion statistics, tsallis statistics
1. Theoretical study of single-photon detectors
The purpose is to develop sensors capable of seeing single-photons of wavelengths up to 1 cm or more, for dark matter and axions detection. We develop theoretical models for the calculation of the processes that take place in the detectors, like quasiparticle-quasiparticle interaction, heat and quasiparticle exchange between sub-systems, fluctuations and noise, etc. Using these tools, we analyze the detector's response, noise equivalent power, and energy resolution.
We investigate mainly two technologies, capable of achieving single-photon detection at such long wavelengths: detectors based on Josephson junctions and detectors based on the "cold electron bolometer" concept.
2. Superconductivity
We search for new phenomenology that may emerge from the application of the theory of superconductivity to mesoscopic systems.
3. Non-extensive statistics and fractional exclusion statistics, with applications to mesoscopic systems of interacting quasiparticles.
4. Theoretical study of solar cells -- excitations, charge transport, and current-voltage output
- D.V. Anghel and A. Parvan, The statistics of mesoscopic systems and the physical interpretation of extensive and non-extensive entropies, J. Phys. A: Math. Theor. 51, 445002 (2018).
- D.V. Anghel and S.Cojocaru, Electron-phonon heat exchange in quasi-two-dimensional nanolayers, Eur. Phys. J. B 90, 260 (2017).
- D.V. Anghel and G.A. Nemnes, The role of the chemical potential in the BCS theory, Physica A 464, 74 (2016).
- D.V. Anghel, G.A. Nemnes, F. Gulminelli, Equivalence between fractional exclusion statistics and self-consistent mean-field theory in interacting-particle systems in any number of dimensions, Phys. Rev. E 88, 042150 (2013).
- D.V. Anghel, The fractional exclusion statistics amended, EPL 87, 60009 (2009).