Explanipedia

Lorentz Transformation in Quantum Mechanics Open

M. Baldo · 2025

The compatibility of special relativity and Quantum Mechanics has been questioned by several authors. The origin of this tension can be traced back mainly to the introduction of the measurement processes and the corresponding wave function…

The dynamics of spontaneous emission Open

M. Baldo · 2025

The spontaneous decay of an excited atom by photon emission is one of the most common and elementary physical process present in nature and in laboratories. The decay is random in time with constant probability density, as it can be inferr…

The Barcelona Catania Paris Madrid energy density functional Open

M. Baldo, L. M. Robledo, X. Viñas · 2023

A realistic model for completing Quantum Mechanics Open

M. Baldo · 2021

In the well known Copenhagen interpretation of Quantum mechanics, advocated by N. Bohr, the physical objects and the experimental results can be described only in a macroscopic language, leaving any possible microscopic description as unsp…

Superfluid Phonons in Neutron Star Core Open

M. Baldo · 2021

In neutron stars the nuclear asymmetric matter is expected to undergo phase transitions to a superfluid state. According to simple estimates, neutron matter in the inner crust and just below should be in the s-wave superfluid phase, corres…

Transport coefficients of nucleon neutron star cores for various nuclear interactions within the Brueckner-Hartree-Fock approach Open

P. S. Shternin, M. Baldo · 2020

We consider the thermal conductivity, shear viscosity, and momentum relaxation rates in the nucleon cores of the neutron stars. We study how the choice of the nuclear interaction and the model for three-body forces may affect these transpo…

Coupling between superfluid neutrons and superfluid protons in the elementary excitations of neutron star matter Open

M. Baldo, C. Ducoin · 2019

Several phenomena occurring in neutron stars are affected by the elementary\nexcitations that characterize the stellar matter. In particular, low-energy\nexcitations can play a major role in the emission and propagation of neutrinos,\nneut…

In-medium enhancement of the modified Urca neutrino reaction rates Open

P. S. Shternin, M. Baldo, P. Haensel · 2018

Inclusion of particle-vibration coupling in the Fayans functional: Odd-even mass differences of semimagic nuclei Open

É. E. Saperstein, M. Baldo, С. С. Панкратов, S. V. Tolokonnikov · 2018

A method to evaluate the particle-phonon coupling (PC) corrections to the\nsingle-particle energies in semi-magic nuclei, based on the direct solution of\nthe Dyson equation with PC corrected mass operator, is presented. It is used\nfor fi…

Phonon–particle coupling effects in odd–even mass differences of semi-magic nuclei Open

É. E. Saperstein, M. Baldo, С. С. Панкратов, S. V. Tolokonnikov · 2017

A method to evaluate the particle-phonon coupling (PC) corrections to the single-particle energies in semi-magic nuclei, based on a direct solving the Dyson equation with PC corrected mass operator, is used for finding the odd-even mass di…

Elementary excitations in homogeneous superfluid neutron star matter: Role of the neutron-proton coupling Open

M. Baldo, C. Ducoin · 2017

The thermal evolution of Neutron Stars is affected by the elementary\nexcitations that characterize the stellar matter. In particular, the low-energy\nexcitations, with a spectrum linear in momentum, can play a major role in the\nemission …

Quark degrees of freedom in nuclear matter Open

M. Baldo · 2017

The microscopic theory of Nuclear Matter has been approached along the years by different many-body methods and different nucleon-nucleon (NN) interactions. The realistic NN interactions can be classified mainly into two categories. One re…

Barcelona-Catania-Paris-Madrid functional with a realistic effective mass Open

M. Baldo, L. M. Robledo, P. Schuck, X. Viñas · 2017

The Barcelona-Catania-Paris-Madrid (BCPM) functional recently proposed to\ndescribe nuclear structure properties of finite nuclei is generalized as to\ninclude a realistic effective mass. The resulting functional is as good as the\npreviou…

Phonon–particle coupling effects in odd–even double mass differences of semi-magic nuclei Open

É. E. Saperstein, M. Baldo, С. С. Панкратов, S. V. Tolokonnikov · 2016

A method is developed to consider the particle-phonon coupling (PC) effects\nin the calculation of the odd-even double mass differences (DMD) in semi-magic\nnuclei starting from the free $NN$-potential. The PC correction $\\delta\n\\Sigma^…

Phonon–particle coupling effects in the single-particle energies of semi-magic nuclei Open

É. E. Saperstein, M. Baldo, С. С. Панкратов, S. V. Tolokonnikov · 2016

A method is presented to evaluate the particle-phonon coupling (PC) corrections to the single-particle energies (SPEs) in semi-magic nuclei. In such nuclei always there is a collective low-lying $2^+$ phonon, and a strong mixture of single…

The LOFT mission concept: a status update Open

M. Feroci, E. Bozzo, S. Brandt, M. Hernanz, M. van der Klis , et al. · 2016

The Large Observatory For x-ray Timing (LOFT) is a mission concept which was proposed to ESA as M3 and M4 candidate in the framework of the Cosmic Vision 2015-2025 program. Thanks to the unprecedented combination of effective area and spec…

Phonon effects on the double mass differences in magic nuclei Open

É. E. Saperstein, M. Baldo, N. V. Gnezdilov, S. V. Tolokonnikov · 2016

Odd-even double mass differences (DMD) of magic nuclei are found within the approach starting from the free $NN$ interaction with account for particle-phonon coupling (PC) effects. We consider three PC effects: the phonon induced effective…

Constraints on modern microscopic equations of state Open

G. Taranto, M. Baldo, G. F. Burgio · 2016

We compare a set of equations of state derived within microscopic many-body approaches, and study their predictions as far as phenomenological data on nuclei from heavy ion collisions, and astrophysical observations on neutron stars are co…

The equation of state at finite temperature: Structure and composition of protoneutron stars Open

G. F. Burgio, M. Baldo, H. Chen, H-J Schulze · 2016

We study the hadron-quark phase transition at finite temperature in the interior of protoneutron stars, combining the equation of state obtained within the Brueckner-Hartree-Fock approach for hadronic matter with the MIT bag and the Dyson-…

Phonon–particle coupling effects in odd–even double mass differences of magic nuclei Open

É. E. Saperstein, M. Baldo, N. V. Gnezdilov, S. V. Tolokonnikov · 2016

A method is developed to consider the particle-phonon coupling (PC) effects\nin the problem of finding odd-even double mass differences (DMD) of magic\nnuclei within the approach starting from the free $NN$-potential. Three PC\neffects are…

Neutron star structure from a quark-model baryon-baryon interaction Open

K. Fukukawa, M. Baldo, G. F. Burgio, H.-J. Schulze · 2016

\nWe derive the equation of state (EOS) of nuclear matter from are alistic constituent quark model for the nucleon-nucleon interaction. We use the Brueckner-Bethe-Goldstone approach with the inclusion of the three hole-line contribution. W…

Nuclear matter equation of state from a quark-model nucleon-nucleon interaction Open

K. Fukukawa, M. Baldo, G. F. Burgio, L. Lo Monaco, H.‐J. Schulze · 2015

Starting from a realistic constituent quark model for the nucleon-nucleon\ninteraction, we derive the equation of state (EOS) of nuclear matter within the\nBethe-Brueckner-Goldstone approach up to three-hole-line level, without need to\nin…

Unified equation of state for neutron stars on a microscopic basis Open

B. K. Sharma, M. Centelles, X. Viñas, M. Baldo, G. F. Burgio · 2015

We derive a new equation of state (EoS) for neutron stars (NS) from the outer crust to the core based on modern microscopic calculations using the Argonne v18 potential plus three-body forces computed with the Urbana model. To deal with th…

Beyond the mean field in the particle–vibration coupling scheme Open

M. Baldo, P. F. Bortignon, G. Colò, D. Rizzo, L. Sciacchitano · 2015

The Energy Density Functional theory is one of the most used methods developed in nuclear structure. It is based on the assumption that the energy of the ground state is a functional only of the density profile. The method is extremely suc…

Beyond the mean field in the particle-vibration coupling scheme Open

M. Baldo, P.F. Bortignon, G. Colò, Davide Rizzo, L. Sciacchitano · 2015

The Energy Density Functional theory is one of the most used methods developed in nuclear structure. It is based on the assumption that the energy of the ground state is a functional only of the density profile. The method is extremely suc…

Hybrid neutron stars with the Dyson-Schwinger quark model and various quark-gluon vertices Open

Huiyao Chen, Jin-Biao Wei, M. Baldo, G. F. Burgio, H.-J. Schulze · 2015

We study cold dense quark matter and hybrid neutron stars with a\nDyson-Schwinger quark model and various choices of the quark-gluon vertex. We\nobtain the equation of state of quark matter in beta equilibrium and\ninvestigate the hadron-q…

pairing for neutrons in dense neutron matter induced by a soft pion Open

С. С. Панкратов, M. Baldo, É. E. Saperstein · 2015

The possibility of neutron pairing in the $^1S_0$ channel is studied for dense neutron matter in a vicinity of the $\pi^0$ condensation point. The $^1S_0$ pairing gap $\Delta$ is shown to occur in a model with a pairing force induced by th…

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