POTEL AGUILAR , Gregory

- Se ha abordado en esta Tesis el proceso de medida de un sistema cuántico, centrándonos en dos aspectos bien diferenciados: (i) el establecimiento de la correlación necesaria entre el sistema medido y el aparato de medida, y (ii) la singularización de un único resultado. Como caso paradigmático, se ha emprendido el estudio del movimiento de...

With the help of a unified nuclear-structure–direct-reaction theory we analyze the reaction 1H(11Li,9Li)3H. The two halo neutrons are correlated through the bare and the induced (medium polarization) pairing interaction. By considering all dominant reaction channels leading to the population of the 1/2− (2.69 MeV) first excited state of 9Li,...

While Josephson-like junctions, transiently established in heavy-ion collisions (τcoll ≈ 10−21 s) between superfluid nuclei—and through which Cooper-pair tunneling (Q-value Q2n) proceeds mainly in terms of successive transfer of entangled nucleons—are deprived of the macroscopic aspects of a supercurrent, they display many of the special...

We present a brief introduction to the second order DWBA reaction formalism which we have used to perform the theoretical analysis of two–nucleon transfer reactions induced both by heavy and light ions. We also show an example of such a calculation, emphasizing the connection between the structure aspects of the prob- lem and the resulting...

Pairing rotations and pairing vibrations are collective modes associated with a field, the pair field, which changes the number of particles by two. Consequently, they can be studied at profit with the help of two-particle transfer reactions in superfluid and in normal nuclei, respectively. The advent of exotic beams has opened, for the first...

The motion of neutral particles with magnetic moments in an inhomogeneous magnetic field is described in a quantum mechanical framework. The validity of the semiclassical approximations which are generally used to describe these phenomena is discussed. Approximate expressions for the evolution operator are derived and compared to the exact...