Teaching
Lecture Notes in Cosmology
After some years of teaching I collected my handwritten notes and published them in a book with Springer. See:
www.springer.com/us/book/9783319955698
Topics: The Expanding Universe, Thermal History, Cosmological Perturbations, Boltzmann Equations, Initial Conditions, Stochastic Perturbations, Inflation, Cosmic Microwave Background Temperature and Polarisation Anisotropies.
I am working on a second edition. Contact me if you have suggestions or wish to have a look at the draft.
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Geodesics
I sporadically work on this monograph in which I systematically use Vieta's formulas in order to categorize the geodesic trajectories of massive and massless particles in the geometry of some well-known black hole solutions. At the moment, I have only considered Schwarzschild and Kerr solutions (the latter not yet completely).
Contact me if you wish to have a look at the draft.
Talks and Lectures
February 2025: Einstein e la Relatività, Outreach seminar, Varese
June 2024: Introduction to Cosmology, Estate Quantistica, Scalea, Italy (here Part 2 and Part 3)
September 2022: Lenteamento Gravitacional, Inverno Astrofísico, Domingos Martins, Espírito Santo, Brazil
September 2022: Introdução à gravitação, Inverno Astrofísico, Domingos Martins, Espírito Santo, Brazil
September 2022: Enhanced Recombination and the Hubble tension, VI Escola José Plínio Baptista, Pedra Azul, Espírito Santo, Brazil
September 2022: Introdução à Cosmologia, Universo no parque, Vitória, Espírito Santo, Brazil
June 2022: Enhanced Recombination and the Hubble tension, Estate Quantistica 2022, Scalea, Italy
April 2022: Does the cosmological constant stay hidden?, Cosmosur VI, (in remote seminar)
September 2020: Review of the cosmological constant problem, GravBR initiative seminar, (in remote seminar)
July 2020: About the hiding of the cosmological constant, Cosmology group seminar, Heidelberg University ITP, Germany (in remote seminar)
July 2019: Lectures on the cosmological constant, Block course, Heidelberg University ITP, Germany
December 2018: The effect of the cosmological constant on the bending of light, Cosmology group seminar, Heidelberg University ITP, Germany
July 2018: Introduction to Gravitational Waves, Inverno Astrofísico 2018, Castelo, Espírito Santo, Brazil
November 2017: Gravitational Lensing, colóquio do PPGFis, Vitória, Espírito Santo, Brazil
September 2017: Gamma, Zeta and prime Numbers. PPGCosmo Colloquium, Vitória, Espírito Santo, Brazil
May 2017: PPGFis seminar: Introdução à Cosmologia, colóquio do PPGFis, Vitória, Espírito Santo, Brazil
April 2017: Introdução à Cosmologia. 3 lectures delivered at Primeira Escola de Ciências Físicas Brasil-Cabo Verde, (here Lecture 2 and Lecture 3)
September 2015: Lensing in the McVittie metric, ICG seminar, Portsmouth, UK
March 2012: The cosmic microwave background radiation and the integrated Sachs-Wolfe effect, colóquio do PPGFis, Vitória, Espírito Santo, Brazil
April 2011: Scattering of particles near a rotating black hole, Cosmology group seminar, UFES, Espírito Santo, Brazil
November 2010: Causal Bulk Viscous Cosmology - Bulk Viscosity as Unified Dark Matter, CBPF seminar, Rio de Janeiro, Brazil
Mathematica Codes
I have developed some Mathematica codes for my work. They are detailed in the following. If interested, please contact me.
Solution of the Tolman-Oppenheimer-Volkoff equations for the stability of a neutron star and Mass-Radius diagram.
Computation of the likelihood from SNIa data for a wCDM model (easily extendable to any cosmological model with 2 free parameters). You'll need a dat file with SNIa data. My code here is set up for the Union2 dataset. An immediate improvement is to use the last JLA data.
Analysis of the likelihood, contour plots and probability density functions for a wCDM model (extendable again to any cosmological model with 2 free parameters).
Contact
E-mail: of.piattella@uninsubria.it
Office Phone number: +39 031 238 6213
Address
Dipartimento di Scienza e Alta Tecnologia (DiSAT)
Università degli Studi dell'Insubria
via Valleggio, 11
22100, Como, Italy