64 citations · 191 across the 13 of their papers we have counts for
13 papers
Bianchi type-I cosmological dynamics in gravity: a covariant approach
Fabrizio Esposito, Sante Carloni, Stefano Vignolo
Making use of the covariant formalism, we show explicitly the effect that nonmetricity has on the dynamics of the universe. Then, using the Dynamical System Approach, we an…
Spinor fields in -gravity
Stefano Vignolo, Sante Carloni, Roberto Cianci +2
We present a tetrad-affine approach to gravity coupled to spinor fields of spin-1/2. After deriving the field equations, we derive the conservation law of the spin…
Reconstructing isotropic and anisotropic cosmologies
Fabrizio Esposito, Sante Carloni, Roberto Cianci +1
We present a reconstruction algorithm for cosmological models based on gravity. We specifically focus on obtaining exact Bianchi Type-I and Friedmann-Lema\^ıtre-Ro…
Reconciling Experimental and Theoretical Vibrational Deactivation in Low-Energy O+N Collisions
Qizhen Hong, Massimiliano Bartolomei, Fabrizio Esposito +3
Molecular dynamics calculations of inelastic collisions of atomic oxygen with molecular nitrogen are known to show orders of magnitude discrepancies with experimental results in th…
Temperature and density dependent cooling function for H with updated H/H collisional rates
Carla Maria Coppola, François Lique, Francesca Mazzia +2
The energy transfer among the components in a gas determines its fate. Especially at low temperatures, inelastic collisions drive the cooling and the heating mechanisms. In the ear…
State-to-state vibrational kinetics of H and H in a post-shock cooling gas with primordial composition
C. M. Coppola, G. Mizzi, D. Bruno +4
The radiative cooling of shocked gas with primordial chemical composition is an important process relevant to the formation of the first stars and structures, as well as taking pla…
Generating Solutions to the Einstein - Maxwell Equations
I. G. Contopoulos, F. P. Esposito, K. Kleidis +2
The Einstein-Maxwell (E-M) equations in a curved spacetime that admits at least one Killing vector are derived, from a Lagrangian density adapted to symmetries. In this context, an…
Generating Solutions to the Einstein Field Equations
I. G. Contopoulos, F. P. Esposito, K. Kleidis +2
Exact solutions to the Einstein field equations may be generated from already existing ones (seed solutions), that admit at least one Killing vector. In this framework, a space of…
Higher-Derivative Terms in N=2 SUSY Effective Actions
Philip C. Argyres, Adel M. Awad, Gregory A. Braun +1
Harmonic superspace can be used to construct higher derivative terms in N=2 supersymmetric effective actions despite the infinite redundancy in their description due to the infinit…
Higher-Derivative Terms in N=2 Supersymmetric Effective Actions
Philip C. Argyres, Adel M. Awad, Gregory A. Braun +1
We show how to systematically construct higher-derivative terms in effective actions in harmonic superspace despite the infinite redundancy in their description due to the infinite…
A scalar invariant and the local geometry of a class of static spacetimes
Manash Mukherjee, F. P. Esposito, L. C. R. Wijewardhana
The scalar invariant, I, constructed from the "square" of the first covariant derivative of the curvature tensor is used to probe the local geometry of static spacetimes which are…
Detecting Event Horizons and Stationary Surfaces
Richard G. Gass, F. Paul Esposito, L. C. R. Wijewardhana +1
We have investigated the behavior of three curvature invariants for Schwarzschild, Reissner-Nordstrøm, Kerr, and Kerr-Newman black holes. We have also studied these invariants for…
The next to leading order effective potential in the 2+1 dimensional Nambu-Jona-Lasinio model at finite temperature
E. P. Esposito, I. A. Shovkovy, L. C. R. Wijewardhana
The finite temperature effective potential in the 2+1 dimensional Nambu-Jona-Lasinio model is constructed up to the next to leading order in the large expansion, where is t…