Coordinatore: Umberto D’Alesio
INFN-Sezione di Cagliari
c/o Dipartimento di Fisica
Stanza: 1B21
Email: umberto.dalesio@ca.infn.it
Tel: +39 070 675 4912
Sito Web: Gruppo4
Le attività legate alla fisica teorica di ambito INFN sono coordinate a livello italiano dalla Commissione Scientifica Nazionale 4.
Attività nelle quali è coinvolta la Sezione INFN di Cagliari:
Gravitational Theories
Mariano Cadoni, Parul Jain, Matteo Tuveri
General relativity and extensions: Black holes; Minimally coupled Einstein-Maxwell-scalar theories; Entanglement entropy vs statistical entropy and
thermodynamical entropy; Ultra-compact objects such as boson stars and wormholes; Gravitational waves. Cosmology: Models for inflation; Dark energy via holographic description. Holographic description: Black brane solutions; AdS/CFT correspondence; Domain-wall/cosmology correspondence; Fluid/gravity correspondence. Alternative approaches to GR: Emergent gravity.
Hadron Physics
Umberto D’Alesio, Carlo Flore, Francesco Murgia, Cristian Pisano
An updated extraction of the quark transversity distribution and the Collins fragmentation function from recent SIDIS and e+e−e+e− collision data. A new study of the potential contribution of the Sivers and Collins effects to the transverse single spin asymmetry in polarized pp→hXpp→hX processes at large Feynman xx. Study of the process dependence of the Sivers and Collins effects in polarized p↑p→jetπXp↑p→jetπX processes. Study of transverse single spin asymmetries and TMD factorization in ℓp→πXℓp→πX processes. Study of TMD evolution and non-perturbative effects in transverse momentum spectra of Z-boson production in Drell-Yan.
Mathematical Physics
Salvatore Mignemi, Giacomo Rosati
Theory and phenomenology of models with spacetime non-commutativity. A particularly strong effort is being devoted to the study of Snyder noncommutativity and other models which lend themselves to the study of the interplay between spacetime curvature and momentum-space curvature.
String Theory
Giuseppe D’Appollonio
The Regge limit of inelastic string amplitudes at tree level, using both the light-cone Green-Schwarz vertex and the covariant Reggeon vertex operator. A precise interpretation of the eikonal operator through the explicit tree-level calculation of generic inelastic transitions between closed strings as they scatter off a stack of parallel DpDp-branes.
Turbulence
Piero Olla
Microscopic swimming, with particular interest in the exploitation of external means (presence of an external flow, of thermal fluctuations, etc.) to aid propulsion. The dynamics of a population in an external flows, especially as regards the role of demographic fluctuations in the problem. Modelling of turbulence and turbulent transport by random fields.
Miscellaneous
Soliton theory; DNA dynamics. (M. Cadoni)
Link al sito del gruppo IV: http://theory.ca.infn.it/research/