Postdoc position in the Neutron Star Matter theory group at the Pisa INFN Section: Modelling the equation of state of dense and hot matter for astrophysical applications.

The Neutron Star Matter (NEUMATT) theory group at the Pisa INFN Section has an opening for a 2-year postdoc position in the field of Extreme Matter and Compact Object Physics sponsored by the National Institute for Nuclear Physics (INFN) Job opportunuty N. 25864. The postdoc will work at the Pisa INFN Section and Physics Department of the University of Pisa in collaboration with Prof. Ignazio Bombaci. The research topic is “Modelling the equation of state of dense and hot matter for astrophysical applications”.

The deadline for applications is November 10 2023 (11:59 a.m. CET). Applications are only accepted online via the following link: https://reclutamento.dsi.infn.it/ Bando N. 25864 (job number 25864).

In the application the candidate will be requested to indicate the INFN Section (Sezione di Pisa) and the research topic (Modelling the equation of state of dense and hot matter for astrophysical applications) since the call N. 25864 includes other 14 topics in different INFN Sections. Full instructions in English can be found on the file “Pdf Bando” Job opportunuty N. 25864

The research topics of the Pisa NEUMATT group have focused mainly on the following aspects of theoretical nuclear physics and relativistic asctrophysics: Nuclear quantum many-body problem; Equation of state of hadronic matter under extreme conditions; Quark deconfinement phase transition in dense matter and related astrophysical phenomena; Numerical General Relativity: Neutron star structure and evolution, Binary neutron stars merging and related astrophysical phenomena.

More recently the research activity has focused on the study of newborn neutron stars and postmerger compact objects.

Beside the thermal effects already included in our recent calculations of the EoS of nuclear matter, we also started to investigate the role of neutrino trapping on the EoS and thus to study the structure and early evolution of newborn neutron stars. In particular we started to investigate in addition to static (i.e. non-rotating) configurations also rapidly rotating stars assuming rigid or differential rotation. This study is extremely relevant to investigate the evolution of a newly born neutron star, the concept of neutron star limiting mass and the fate of the postmerger compact object formed in a BNS merger.

   Some recent publications

[1]    D. Logoteta, A. Perego, I Bombaci, Microscopic equation of state of hot nuclear matter for numerical relativity simulations, Astronomy and Astrophysics 646 (2021) A55.

[2]   D. Logoteta, Hyperons in Neutron Stars, Universe 7 (11) (2021) 408.

[3] A. Prakash, D. Radice, D. Logoteta, A. Perego, V. Nedora, I. Bombaci, R. Kashyap, S. Bernuzzi, A. Endrizzi, Andrea, Signatures of deconfined quark phases in binary neutron star mergers, Physical Review D 104 (2021) 083029.

[4]   I. Bombaci, A. Drago, D. Logoteta, G. Pagliara, I. Vidaña, Was GW190814 a Black Hole-Strange Quark Star System?, Physical Review Letters, 126 (2021) 162702.

[5]   D. Logoteta, I. Bombaci, A. Perego, Isoentropic equations of state of beta-stable hadronic matter with a quark phase transition, EPJ A 58 (2022) 55.

[6]   I. Bombaci, The Hyperon Puzzle in Neutron Stars, Nuclear Physics News, 31:3, (2021) 17-21, DOI: 10.1080/10619127.2021.1915024 

[7] I. Bombaci, The Equation of State of Neutron Star Matter, Chap.9 in the book Millisecond Pulsars, Astrophysics and Space Science Library (ASSL, volume 465) Springer Nature Switzerland (2022)

[8] A. Lovato, I. Bombaci, D. Logoteta, M. Piarulli, R. B. Wiringa, Benchmark calculations of infinite neutron matter with realistic two- and three-nucleon potentials, Phys. Rev. C 105 (2022) 055808.

[9] R. Kashyap, A. Das, D. Radice, S. Padamata, A. Prakash, D. Logoteta, A. Perego, D. A. Godzieba, S. Bernuzzi, I. Bombaci, F. J. Fattoyev, B. T. Reed, A. D. Schneider, Numerical relativity simulations of prompt collapse mergers: Threshold mass and phenomenological constraints on neutron star properties after GW170817, Phys. Rev. D 105 (2022) 103022.

[10] I. Vidana, D. Logoteta, I. Bombaci, Effect of chiral nuclear forces on the neutrino mean free path in hot neutron matter, Physical Review C 106 (2022) 035804

Pisa, world-famous for its leaning tower and for having been the birthplace of Galileo Galilei, is a beautiful small city in Tuscany close to the sea and with an international airport just a few kilometers from the city center. The gravitational wave interferometer VIRGO is located in the Pisa countryside, and research on gravitational waves is a major experimental activity at the Pisa INFN Section and at the Physics Department of the University of Pisa.

For inquire please do not hesitate to contact Prof. Ignazio Bombaci (Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.)