Changes for page Alfonso Vázquez Ramallo

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1		-=== Artificial Quantum Matter ===
2		-==== Titor: [[Alfonso>>https://igfae.usc.es/igfae/persoa/vazquez-ramallo-alfonso/163/||target="_blank"]] Vázquez Ramallo ====
3		-==== Supervisor: [[Alfonso>>https://igfae.usc.es/igfae/persoa/vazquez-ramallo-alfonso/163/||target="_blank"]] Vázquez Ramallo
	1	+=== Neutrinos as Open Quantum Systems ===
	2	+==== Titor: [[Gonzalo>>https://igfae.usc.es/igfae/persoa/alonso-alvarez-gonzalo/692/||target="_blank"]] Alonso Álvarez ====
	3	+==== Supervisor: [[Gonzalo>>https://igfae.usc.es/igfae/persoa/alonso-alvarez-gonzalo/692/||target="_blank"]] Alonso Álvarez
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6		-The experimental advances in atomic physics and quantum optics have opened many possibilities to explore new phases of matter and, interestingly, to create states of matter that do not exist in Nature. Among these systems, let us mention those with artificial gauge fields and synthetic dimensions, as well as those that are in a topological phase induced by external periodic perturbations. In this stay the student will make contact with these topics that are not covered in the standard undergraduate courses. In particular, he/she will study the so-called Floquet systems, in which a periodic driving can induce and suppress couplings in the original Hamiltonian, giving rise to new physical phenomena.
	6	+Neutrino oscillations provide a natural setting in which to explore how quantum coherence evolves in realistic physical environments. The coherent evolution of neutrino states can persist over macroscopic distances, from terrestrial experiments to astrophysical baselines, making neutrinos an exceptional probe of decoherence and environmental effects.
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	8	+In the standard description, neutrinos are treated as isolated quantum systems whose flavour evolution is governed by the Schrödinger equation. In many realistic situations, however, particles propagate through complex environments that can induce decoherence and dissipation, requiring a more general framework based on the theory of open quantum systems.
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	10	+In this project, the student will learn the density-matrix formalism and apply it to neutrino oscillations. Starting from the standard two-flavour framework, the student will study how environmental effects modify flavour evolution and oscillation probabilities. Applications will be discussed in particle physics and astrophysical settings, such as neutrino propagation in matter and in dense or early-Universe environments.
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	12	+The project combines analytical calculations with simple numerical simulations and provides an introduction to modern techniques in quantum theory and their use in fundamental physics. Depending on progress and interest, the methods developed may also be applied to other oscillation phenomena, such as photon–dark-photon or photon–axion mixing, relevant to searches for physics beyond the Standard Model.