• An insight into gravitational microlensing and the search for exoplanetary systems 

      D'Ago, Giuseppe (Universita degli studi di Salerno, 2015-04-30)
      Nature always offers astonishing shows to the humankind. Gravitational lensing is one of the most intriguing effects which can be observed, and the astrophysical applications of such a phenomenon span from particle physics ...
    • Constraining models of extended theories of gravity with terrestrial and astrophysical experiments 

      Stabile, Antonio (Universita degli studi di Salerno, 2015-04-30)
      In this Thesis we report a general review of Extended Theories of Gravity and the fundamental aspects of General Relativity. We show the technicality of development of field equation with respect to Newtonian, Post-Newtonian ...
    • Electron-electron and electron-phonon interactions in strongly correlated systems 

      Sica, Gerardo (Universita degli studi di Salerno, 2013-04-29)
      In this work we investigate some aspects of the physics of strongly correlated systems by taking into account both electron-electron and electron-phonon interactions as basic mechanisms for reproducing electronic ...
    • Exact solutions in general relativity and alternative theories of gravity: mathematical and physical properties 

      Canonico, Rosangela (Universita degli studi di Salerno, 2011-06-06)
      In this thesis, we discuss several subjects connected with the framework of GR, in order to characterize astrophysical compact objects. The main purpose is to provide simple models describing gravitational fields generated ...
    • Flavor mixing in quantum field theory and quantum information 

      Di Mauro, Marco (Universita degli studi di Salerno, 2011-05-10)
      After reviewing the formalism for describing flavor mixing, both in Quantum Mechanics and Quantum Field Theory, some consequences along three different directions are studied. First, it is proposed that flavor mixing can ...
    • Gaussian and non-Gaussian resources in Quantum Information 

      Nocerino, Gaetano (Universita degli studi di Salerno, 2013-04-05)
      This dissertation was carried out within the framework of the Quantum Information (QI). In particular, I have analyzed the main aspects: the protocol, the quantum states, the conditional measurements, and the decoherence. The ...
    • Microlensing Towards the SMC and CMB Probing the Dark Matter in Galaxies 

      Mirzoyan, Sergey (Universita degli studi di Salerno, 2013-04-12)
      Firstly we present a new analysis of the results of the EROS-2, OGLE-II, and OGLE-III microlensing campaigns towards the Small Magellanic Clouds (SMC). Through a statistical analysis we address the issue of the nature of ...
    • Non-markovian quantum dynamics 

      Torre, Gianpaolo (Universita degli studi di Salerno, 2016-04-28)
      Quantum systems can necessarily be viewed as open systems. As in classical physics, any realistic description of a system must take into account the cou- pling to an environment that strongly in uences the system itself. ...
    • Particle mixing, two level systems and gauge theory 

      Raimondo, Gianluca (Universita degli studi di Salerno, 2012-04-26)
      In this thesis I will discuss the theory of two level systems and the theory of the oscillating particles in quantum eld theory. In the rst chapter I will consider the time evolution of a two level system, a qubit, ...
    • Quantum Information Theory in Condensed Matter Physics 

      Zonzo, Giuseppe (Universita degli studi di Salerno, 2017-05-22)
      Inthe“standard”Gizburg-Landauapproach,aphasetransitionisintimately connected to a local order parameter, that spontaneously breaks some symmetries. In addition to the “traditional” symmetry-breaking ordered phases, a complex ...
    • Quantumness of gaussian and non-gaussian states in the optical domain 

      Buono, Daniela (Universita degli studi di Salerno, 2013-04-04)
      The Dissertation Quantumness of Gaussian and non-Gaussian states in the op- tical domain collects my personal both theoretical and experimental contribu- tions, in the context of the Quantum Information theory in continuous ...
    • Signatures of quantumness: identification, quantification and dynamical preservation 

      Cianciaruso, Marco (Universita degli studi di Salerno, 2016-04-14)
      The quanti cation of quantumness is necessary to assess how much a physical system departs from a classical behaviour and thus gauge the quantum enhancement in opera- tional tasks such as information processing and ...
    • Topological quantum technologies 

      Marino, Antonio (Universita degli studi di Salerno, 2021-04-08)
      Precision measurements through engineered quantum systems are achieving new primacies in sensitivity and accuracy and therefore novel potential applications ranging from mechanical and electrical engineering to material ...
    • Trasporto quantistico di spin in eterostrutture magnetiche 

      Sorgente, Alessandro (Universita degli studi di Salerno, 2012-06-04)
      In questa tesi abbiamo studiato il trasporto di spin polarizzato e la torsione dello spin usando l’apporoccio della matrice di scattering secondo la teoria di Buttiker, nel caso di barriere magnetiche finite sotto l'effetto ...