Pentagonul Facultăților de Fizică 2026

Session

Teoretic

27 Jul 2026, 09:00

Sala A

34. Numerical study of 2D scattering on central and non-central potentials

Eva Maria Ioachimescu (Faculty of Physics of the University of Bucharest)

27/07/2026, 09:00

I present a numerical study in the framework of quantum theory of the scattering of a particle moving in a two-dimensional plane on a static potential. I first outline the split-operator (SO) method used to integrate the time-dependent Schrödinger equation (TDSE) and introduce the code developed for this study. To validate the implementation, I present test results for a free particle,...

35. Extended Entangled Relativity with an effective cosmological constant

Josuah Mea (Faculty of Physics of the University of Bucharest)

27/07/2026, 09:15

General Relativity, despite its successes, violates the Mach principle by admitting vacuum solutions where spacetime curvature exists without matter. Entangled Relativity was proposed as a Machian alternative: the action is constructed so that no consistent matter‑free theory can be defined. Recently, an extension of Entangled Relativity was introduced that incorporates a positive...

36. Spectrum generating algebras of harmonic oscillators

Victor Ovidiu Slupic ("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering; Faculty of Physics of the University of Bucharest)

27/07/2026, 09:30

Symmetries commuting with the Hamiltonian explain degeneracies; they do not build spectra. Spectrum generating algebras do: their generators ladder between energy levels, so an entire spectrum is carried by a few irreducible representations. I illustrate the idea where it is cleanest, in the anisotropic harmonic oscillator, whose bilinears in creation and annihilation operators close into...