# Hadron Physics and Fundamental Interactions

The group Hadron Physics and Fundamental Interactions is focused in different topics related to nuclear and particle physics: Different formalisms are applied to the study of the non-perturbative regime of Quantum chromodynamics (QCD) including ab-initio approaches as Lattice QCD, other quantum field theoretical methods and phenomenological descriptions based on chiral effective models and relativistic hadronic models. This allows for studies of QCD Green functions, hadron spectroscopy and structure, symmetries of the Dirac equation and relevance to nuclei and condensed matter, and to investigate the Phase Diagram for Strongly Interacting Matter and the nature of the respective phase transitions. Novel four-dimensional regularization tools are addressed for precision calculations in and beyond the Standard Model with the aim of gaining efficiency in the subtraction and cancellation of infrared and ultraviolet singularities in higher order computations in quantum field theories. This is essential to meet the accuracy of experimental data foreseen at the Future Circular Collider. Phenomenology of Particle Physics is used to explore particle physics beyond the Standard Model (neutrino masses, axions and the strong CP problem, supersymmetry, composite Higgs, extra-dimensions, grand unified theories, etc.).

## Current projects

- COST Action CA15213: Theory of hot matter and relativistic heavy-ion collisions (THOR)
- COST Action CA16214 - PHAROS: The multi-messenger physics and astrophysics of neutron stars
- COST Action CA16201: Unraveling new physics at the LHC through the precision frontier (PARTICLEFACE)
- MagNStar: Magnetized neutron star matter: equation of state, properties, and structure of magnetars

## Previous projects

- Neutron Stars: matter under extreme conditions
- Compact Stars: Laboratories for nuclear and particle physics

## Recent Publications

## Papers

### International Journals

1 - Summerfield scaling model and electrical conductivity study for understanding transport mechanisms of a Cr3+ substituted ZnAl2O4 ceramic

I Elhamdi, F Mselmi, H Souissi, Kammoun, E Dhahri, P Sanguino, BFO Costa

RSC Advances **13(5)**, 3377-3393 (2023)

2 - Spanning the full range of neutron star properties within a microscopic description

Tuhin Malik, Márcio Ferreira, Milena Bastos Albino, Constança Providência

Phys. Rev. D **107**, 103018 (2023)

3 - Higgs boson decay into gluons in a 4D regularization: IR cancellation without evanescent fields to NLO

Ana Pereira, Adriano Cherchiglia, Marcos Sampaio, Brigitte Hiller

Eur. Phys. J. accepted (2022)

4 - Investigations on the structural and magnetic properties of Ba1-xGdxFe12O19 (0 <= x <= 0.15) nanoparticles

MAP Buzinaro, BFO Costa, MS Ivanov, GC Cunha, MA Macedo, RS Angelica, NS Ferreira

J. Magn. Magn. Mater. **555**, 169340 (2022)

5 - Heavy baryons in hot stellar matter with light nuclei and hypernuclei

T Custodio, H Pais, C Providencia

Phys. Rev. C **105(6)**, 065803 (2022)

6 - Bosonic dark matter in neutron stars and its effect on gravitational wave signal

D. R. Karkevandi, S. Shakeri, Violetta Sagun, O. Ivanytskyi

Phys. Rev. D **105**, 023001 (2022)

7 - Kallen-Lehmann spectral representation of the scalar SU(2) glueball

D Dudal, O Oliveira, M Roelfs

Eur. Phys. J. C **82(3)** (2022)

8 - Analytic structure of the Landau gauge quark propagator from Pade acute accent analysis

AF Falcao, O Oliveira

Phys. Rev. D **106(11)**, 114022 (2022)

9 - Landau parameters and entrainment matrix of cold stellar matter: effect of the symmetry energy and strong magnetic fields

Helena Pais, Oleksii Ivanytskyi, Constança Providência

J. Cosmol. Astropart. Phys. **04, 024**, 024 (2022)

10 - Entanglement and scattering in quantum electrodynamics: S matrix information from an entangled spectator particle

J. da Fonseca, B. Hiller, J. B. Araujo, I. G. da Paz, and M. Sampaio

Phys. Rev D 106 (2022) 5, 056015 (2022)

11 - Identification of binary neutron star mergers in gravitational-wave data using object-detection machine learning models

João Aveiro, Felipe F. Freitas, Márcio Ferreira, Antonio Onofre, Constança Providência, Gonçalo Gonçalves, José A. Font

Phys. Rev. D **106**, 084059 (2022)

12 - Delta baryons in neutron stars

Kauan D. Marquez, Débora P. Menezes, Helena Pais, Constança Providência

Phys. Rev. C **106**, 055801 (2022)

13 - Polytropic fits of modern and unified equations of state

Lami Suleiman, Morgane Fortin, Julian Leszek Zdunik, Constanca Providencia

Phys. Rev. C **106**, 035805 (2022)

14 - Warm inflation, neutrinos and dark matter: a minimal extension of the Standard Model

M Levy, JG Rosa, LB Ventura

J. High Energy Phys. **12**, 176 (2022)

15 - Schwinger function, confinement, and positivity violation in pure gauge QED

LC Loveridge, O Oliveira, PJ Silva

Phys. Rev. D **106(1)**, L011502 (2022)

16 - Numerical simulations of dark matter admixed neutron star binaries

M. Emma, F. Schianchi, Francesco, F. Pannarale, Violetta Sagun, T. Dietrich

Particles **5**, 273 (2022)

17 - The neutron star outer crust equation of state: a machine learning approach

Murarka Utsav Anil, Kinjal Banerjee, Tuhin Malik, Constança Providência

J. Cosmol. Astropart. Phys. **01**, 045 (2022)

18 - Extracting nuclear matter properties from the neutron star matter equation of state using deep neural networks

Márcio Ferreira, Valéria Carvalho, Constança Providência

Phys. Rev. D **106**, 103023 (2022)

19 - Colliding and Fixed Target mode in a single experiment - a novel approach to study the matter under new extreme conditions

O. V. Vitiuk, V. M. Pugatch, K. A. Bugaev, N. S. Yakovenko, P. P. Panasiuk, E. S. Zherebtsova, V. M. Dobishuk, S. B. Chernyshenko, B. E. Grinyuk, Violetta Sagun, O. Ivanytskyi

Particles **5**, 245 (2022)

20 - Heavy baryons in hot stellar matter with light nuclei and hypernuclei

Tiago Custódio, Helena Pais, Constança Providência

Phys. Rev. C **105**, 065803 (2022)

21 - A possible trial beyond the conventional random phase approximation for the su(2)-Lipkin model including the case of nonclosed shell system

Y Tsue, C Providencia, J da Providencia, M Yamamura

Int. J. Mod. Phys. E **31(05)**, 2250055 (2022)

22 - Bayesian inference of signatures of hyperons inside neutron stars

Tuhin Malik and Constança Providência

Phys. Rev. D **106**, 063024 (2022)

23 - Inferring the nuclear symmetry energy at suprasaturation density from neutrino cooling

Tuhin Malik, B. K. Agrawal, and Constança Providência

Phys. Rev. C (Letter) **106**, L042801 (2022)

24 - Inner crust equations of state for CompOSE

Tuhin Malik, Helena Pais

Eur. Phys. J. A **58**, 154 (2022)

25 - Relativistic Description of Dense Matter Equation of State and Compatibility with Neutron Star Observables: A Bayesian Approach

Tuhin Malik, Márcio Ferreira, B.K. Agrawal, Constança Providência

Astrophys. J. (ApJ) **930**, 17 (2022)

26 - CompOSE reference manual

S Typel, M Oertel, T Klahn, D Chatterjee, V Dexheimer, C Ishizuka, M Mancini, J Novak, H Pais, C Providencia, AR Raduta, M Servillat, L Tolos

Eur. Phys. J. A **58(11)**, 221 (2022)

27 - Statistical multifragmentation model within the extended morphological thermodynamics approach

V. S. Kucherenko, K. A. Bugaev, Violetta Sagun, O. Ivanytskyi

Ukr. J. Phys. **67, No. 9**, 639 (2022)

28 - Quick Guides for Use of the CompOSE Data Base

Veronica Dexheimer, Marco Mancini, Micaela Oertel, Constança Providência, Laura Tolos, Stefan Typel

Particles **5**, 346-360 (2022)

29 - Pasta phases in neutron stars under strong magnetic fields

Xiaopeng Wang, Jing Li, Jianjun Fang, Helena Pais, Constança Providência

Phys. Rev. D **105**, 063004 (2022)

### Portuguese Journals

30 - O que são materiais “frustrados’’?

Constança Providência

Gazeta de Física (secção Vamos Experimentar!) **4 vol 44**, 24 (2022)

31 - Porque está a mudar o clima?

Constança Providência

Gazeta de Física (secção Vamos Experimentar!) **1/2 vol 3**, 66 (2022)

32 - O que é o vento?

Constança Providência, Helena Arede, Marta Henriques, Joana Pancas, Rita Wolters

Gazeta de Física (secção Vamos Experimentar!) **45 (3)**, 26 (2022)

## Proceedings

### International Conferences

33 - Tidal deformability as a probe of dark matter in neutron stars

D. R. Karkevandi, S. Shakeri, Violetta Sagun, O. Ivanytskyi

Intern. J. Mod. Phys. D, Proceedings of the Sixteenth Marcel Grossmann Meeting on General Relativity Online; 5-10 July 2021., 3713-3731 (2023)

34 - The quark propagator and quark-gluon vertex from lattice QCD at finite temperature

J. Marques Leal Junior, G. Kalusche, T. Mendes, J.I. Skullerud, O. Oliveira, P. J. Silva

PoS **LATTICE 2022**, 280 (2023)

35 - Hybrid stars with large strange quark cores

Márcio Ferreira, Renan Câmara Pereira, Constança Providência

EPJ Web Conf. (Contribution to Confinement XV) **274**, 07001 (2022)

36 - Hybrid stars from a constrained equation of state

Márcio Ferreira, Renan Câmara Pereira, Constança Providência

EPJ Web Conf. (Contribution to vConf21) **258**, 07001 (2022)

37 - Compact QED: the photon propagator, confinement and positivity violation for the pure gauge theory

Orlando Oliveira, Lee C. Loveridge, Paulo J. Silva

EPJ Web Conf. **274**, 02004 (2022)

38 - Deconfinement in pure gauge SU(3) Yang-Mills theory: the ghost propagator

Orlando Oliveira, Vítor Paiva, Paulo Silva

EPJ Web Conf. **274**, 05008 (2022)

39 - Effect of anti-VEGF presentation in controlling vascular development

R Travasso, AI Costa-Pereira, F Sousa, M Gouveia, F Ferreira, J Bessa, B Sarmento, IM Pinto

Eur. J. Clin. Invest. **52(1)** (2022)

40 - How does dark matter affect compact star properties and high density constraints of strongly interacting matter

Violetta Sagun, E. Giangrandi, O. Ivanytskyi, C. Providência, T. Dietrich

EPJ Web Conf., Proceedings of the 15th Quark Confinement and the Hadron Spectrum Conference (QConf) **274**, 07009 (2022)

41 - Constraints on the fermionic dark matter from observations of neutron stars

Violetta Sagun, E. Giangrandi, O. Ivanytskyi, I. Lopes, K. A. Bugaev

Proceedings of Science (PoS), Proceedings of the Particles and Nuclei International Conference (PANIC2021) **380**, 313 (2022)

## Communications

### Invited

42 - Higgs boson decay into gluons: IR cancellation in the decay rate at NLO using Implicit Regularization

Ana Pereira, Adriano Cherchiglia, Marcos Sampaio, Brigitte Hiller

Talk presented at Excited QCD, Oct 24 - 28 2022 (2022)

43 - As super-propriedades das estrelas de neutrões!

Constança Providência

Rómulo CCVUC **Ciência às seis 18 de janeiro** (2022)

44 - Nos Ínfimos do Universo: Estrelas de neutrões como laboratórios de física nuclear e de partículas

Constança Providência

ENEF - Encontro Nacional dos Estudantes de Física **UBI, 24-27 Setembro** (2022)

45 - he complex composition of neutron stars: heavy baryons, kaon condensates and light nuclei and hypernuclei

Constança Providência

Mini Simposium Baryons: from the lab to neutron stars (HADES meeting, 23 September 2022, University of Coimbra) (2022)

46 - Learning about high density nuclear matter equation of state from neutron stars

Constança Providência, Márcio Ferreira, Tuhin Malik

Workshop "From holography to machine learning" (Helsinki, Finland) (2022)

47 - Thermal evolution of compact stars

Violetta Sagun

Invited seminar at the Institute for Theoretical Physics, University of Wroclaw, Wroclaw, Poland, 29 April (2022)

48 - The impact of dark matter on compact stars and their merger dynamics

Violetta Sagun

Invited seminar at the CENTRA, Instituto Superior Técnico, University of Lisbon, Portugal, 21 July (2022)

49 - Impact of dark matter on compact stars

Violetta Sagun

Invited Theoretical Physics Colloquium hosted by Prof. Igor Shovkovy at the Arizona State University, 29 June (2022)

50 - Impact of dark matter on compact stars and their merger dynamics

Violetta Sagun, Tim Dietrich, Mattia Emma, Edoardo Giangrandi, Oleksii Ivanytskyi, Ilidio Lopes, Francesco Pannarale, Constança Providência, Federico Schianchi

Invited seminar at the Laboratoire de Physique des 2 infinis Irène Joliot-Curie – IJCLab, Université Paris-Saclay, France, 5 November (2022)

51 - Constraints on dark matter from observations of neutron stars and their mergers

Violetta Sagun, Tim Dietrich, Mattia Emma, Edoardo Giangrandi, Oleksii Ivanytskyi, Ilidio Lopes, Francesco Pannarale, Constança Providência, Federico Schianchi

Invited seminar at the Gr@v group, University of Aveiro, Portugal, 19 October (2022)

52 - Probing dark matter with neutron stars

Violetta Sagun, Tim Dietrich, Mattia Emma, Edoardo Giangrandi, Oleksii Ivanytskyi, Ilidio Lopes, Francesco Pannarale, Constança Providência, Federico Schianchi

at the IPA2022: Interplay between Particle and Astroparticle physics 2022, Vienna University of Technology, Vienna, Austria, 5 - 9 September (2022)

### Oral

53 - Compact QED: the photon propagator, confinement and positivity violation for the pure gauge theory

Lee Loveridge, Orlando Oliveira, Paulo Silva

The XVth Quark confinement and the Hadron spectrum conference, Stavanger, Norway, August 1-6 2022 (2022)

54 - Impact of asymmetric fermionic and bosonic dark matter on neutron star properties

Violetta Sagun, Oleksii Ivanytskyi, Edoardo Giangrandi

at the Institute for Nuclear Theory workshop (INT-20R-1B) “The r-process and the nuclear EOS after LIGO-Virgo’s third observing run”, Institute for Nuclear Theory, Seattle, USA, 23 - 27 May (2022)

55 - Compact stars as dark matter probes

Violetta Sagun, T. Dietrich, M. Emma, E. Giangrandi, O. Ivanytskyi, I. Lopes, F. Pannarale, C. Providência, F. Schianchi

at the Kashiwa Dark Matter symposium,
University of Tokyo, Tokyo, Japan, November 29 - December 2 (2022)

56 - Effect of dark matter on observable neutron star’s properties and its discrimination from the strongly interacting matter equation of state

Violetta Sagun, Tim Dietrich, Mattia Emma, Edoardo Giangrandi, Oleksii Ivanytskyi, Ilidio Lopes, Francesco Pannarale, Constança Providência, Federico Schianchi

at the 18th International Conference on QCD in Extreme Conditions (XQCD 2022), Norwegian University of Science and Technology, Trondheim,
Norway, 27 - 29 July (2022)

57 - The effect of dark matter on compact stars and constraints we put on strongly interacting matter at high densities

Violetta Sagun, Tim Dietrich, Mattia Emma, Edoardo Giangrandi, Oleksii Ivanytskyi, Ilidio Lopes, Francesco Pannarale, Constança Providência, Federico Schianchi

at the Institute for Nuclear Theory workshop (INT-22-2b) “Dark Matter in Compact Objects, Stars, and Low-Energy Experiments ”, Institute for Nuclear Theory, Seattle, USA, 1 August - 2 September (2022)

58 - How dark matter affects compact star’s properties and constraints we put on strongly interacting matter at high densities

Violetta Sagun, Tim Dietrich, Mattia Emma, Edoardo Giangrandi, Oleksii Ivanytskyi, Ilidio Lopes, Francesco Pannarale, Constança Providência, Federico Schianchi

at the “XVth Quark Confinement and the Hadron Spectrum” conference, University of Stavanger, Stavanger, Norway, 1 - 6 August (2022)

### Poster

59 - The Quark-Gluon Vertex from Lattice QCD at Finite Temperature

Jesuel Marques, J.-I. Skullerud, Paulo Silva, G. Kalusche

The 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, August 8-13 (2022)

60 - Graph theory approach to wildfire supression

João Aveiro, Daniel Neves, Paulo Silva, Orlando Oliveira, Fernando Nogueira, Jaime Oliveira da Silva

Física2022, 23ª Conferência Nacional de Física, 7-10/9 (2022)

61 - Deconfinement in pure gauge SU(3) Yang-Mills theory: the ghost propagator

Orlando Oliveira, Vítor Paiva, Paulo Silva

The XVth Quark confinement and the Hadron spectrum conference, Stavanger, Norway, August 1-6 (2022)

62 - Large scale screening of high refractive index materials

Pedro J.M.A. Carriço, Pedro Borlido, Márcio Ferreira, Tiago F.T. Cerqueira

Física2022, 23ª Conferência Nacional de Física, 7-10/9 (2022)

63 - Large scale screening of high refractive index materials

Pedro J.M.A. Carriço, Pedro Borlido, Márcio Ferreira, Tiago F.T. Cerqueira

Física2022, 23ª Conferência Nacional de Física, 7-10/9 (2022)

64 - The effect of dark matter on neutron stars and their merger dynamics

Violetta Sagun, E. Giangrandi, O. Ivanytskyi, T. Dietrich, C. Providência

at the Gravitational Wave Physics and Astronomy Workshop 2022 (GWPAW), Melbourne, Australia, 5-9 December (2022)

65 - GW190814 secondary component as a dark matter admixed neutron star

Violetta Sagun, Oleksii Ivanytskyi, Edoardo Giangrandi

at the PHAROS Conference 2022, Rome, Italy, 16 - 19 May (2022)

## Other

66 - Probing hybrid stars and the properties of the special points with radial oscillations

C. Gärtlein, O. Ivanytskyi, Violetta Sagun, D. Blaschke

arXiv:2301.10765 [nucl-th] (2023)

67 - The effect of self-interacting bosonic dark matter on neutron star properties

E. Giangrandi, Violetta Sagun, O. Ivanytskyi, C. Providência, T. Dietrich

submitted to Astroph. J. Preprint arXiv:2209.10905 [astro-ph.HE] (2023)

68 - Quasi-equilibrium configurations of binary systems of dark matter admixed neutron stars

H. R. Rüter, Violetta Sagun, W. Tichy, T. Dietrich

e-Print: 2301.03568 [gr-qc] (2023)

69 - Estrelas de neutrões:
um laboratório de física nuclear, física de partículas e relatividade geral

Constança Providência

Palestra Outreach: Escola Secundária Infanta D. Maria **20 abril** (2022)

70 - Spontaneous breaking of the Peccei-Quinn symmetry during warm inflation

JG Rosa, Luís B. Ventura

submitted not yet accepted [arXiv: 2105.05771] (2022)

71 - Evaporating primordial black holes, the string axiverse, and hot dark radiation

Marco Calzà, John March-Russell, João G. Rosa

Submitted not yet accepted (2022)

72 - Superradiant pion clouds around primordial black holes

Paulo B. Ferraz, Thomas W. Kephart, JG Rosa

submitted not yet accepted [arXiv:2004.11303] (2022)