Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 27 for “"Settore MAT/07 - Fisica Matematica"”.
-
NORMAL FORM METHODS FOR SOME NON LINEAR HAMILTONIAN PDES IN HIGHER DIMENSION
The thesis deals with perturbation theory for non-linear Hamiltonian partial differential equations on high dimensional compact manifolds. In particular, we prove almost global existence for some PDEs of general interest and we provide a suitable algebraic and geometric framework. Proofs are based …
-
On the Necessity of Complex Numbers in Quantum Mechanics
… problem that can be traced back to von Neumann’s mathematical formulation of quantum mechanics. However up to now there are no examples of quantum systems described in Hilbert spaces whose scalar field is different from the set of complex numbers. We show that elementary relativistic systems …
-
ANOMALOUS TRANSPORT:_FROM THEORIES ABOUT OSMOTIC PRESSURE TO A NEW APPROACH IN THE FRAMEWORK OF DYNAMICAL SYSTEMS
… these ideas, the aim of our work is to build a mathematical model to describe the behavior of molecules inside the pores of membranes at the nanometric scale, where a wide variety of anomalous transport phenomena occurs. We take our inspiration observing the features of a tipical tool used to …
-
Statistical physics of molecular sorting in living cells
L'abstract è presente nell'allegato / the abstract is in the attachment
-
New aspects of black hole scalarization in alternative theories of gravity
This thesis investigates the spontaneous scalarization of black holes in extended gravity models. We study two scenarios in which a scalar field develops non-trivial configurations (“hair”) around charged black holes. In the first scenario, a charged black hole is subject to both a tachyonic …
-
Mathematical methods for radio pulsar searching and applications
Since the dawn of civilization, mathematics has been a key tool that humans have used to try and understand the laws of nature and the world that surrounded them. The very first foundations of mathematics were laid by the ancient civilizations of Sumerians, Egyptians and Babylonias, which used …
-
On Inflationary cosmological models
… We also study the effect of the inclusion of matter (in the form of a perfect uid): in this case, we do not find exact solutions because of the non-integrability of the field equations, but we can investigate their global properties (and hence their stability) by means of methods of the theory …
-
On problems in homogenization and two-scale convergence
… which are connected by a thin layer of interface material being perforated by identically shaped voids. Herein, the voids recur periodically in interface direction and shall in size be of the same order as the interface thickness. Moreover, the constitutive properties of the material occupying the …
Page 1 of 2