Dark matter phenomenology / non-standard cosmology / quantum field theory

Master thesis supervisor, “Simulating Inhomogeneous Spacetimes Using the ADM-formalism” (2021), Olli Väisänen, Programme in Nuclear and Particle Physics, Department of Physics, University of Jyväskylä, Jyväskylä, Finland. See: https://jyx.jyu.fi/handle/123456789/78878?locale-attribute=en.

Tutoring and training (2020-2022) the Ph.D. student Cristobal Armaza (ex-alumni PUC), Cornell Center for Astrophysics and Planetary Science, Cornell University, New York, USA. Via highly involved numerical simulations, we are studying radio signatures emitted by the encounters between neutron stars and axion dark matter structures.

Tutoring and training (2019-2021) the Ph.D. student Kohei Fujikura, Department of Physics, Tokyo Institute of Technology, Japan. The research output was the peer-reviewed publication PRD 104 (2021) 123012.

Tutoring and training (2019) the Ph.D. student Yao Li, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China. The research output was the peer-reviewed publication JCAP 07 (2020) 067.

Tutoring and training (2018-to date) the Ph.D. student Peter Wu, Department of Physics and Astronomy, Tufts University, USA. So far, the research output is the peer-reviewed publication PRD 103 (2021) 125014.

INVITED TALKS IN SEMINARS (* via zoom)

"Searching for dark photon solitons via electromagnetic signals",
17/May/2024, Seminar, Tsung-Dao Lee Institute, Shanghai, China

“Axion and Primordial Black Holes in early matter dominated era” *
27/July/2022, Cosmology Meeting, Institute of Cosmology, Tufts University, Massachusetts, USA.

“On Axion Stars and Primordial Black Holes” *
3/September/2021, Cosmo-UFES Seminars, Center for Astrophysics and Cosmology Espírito Santo Federal University (UFES), Espírito Santo, Brazil.

“Looking for the axion in astrophysical setups” *
16/June/2021, Cosmological Seminar, Bilbao Early Universe Cosmology Group, University of the Basque Country, Bilbao, Spain.

“On a new avenue for testing the QCD-Axion dark matter hypothesis” *
20/April/2021, The Institute of Nuclear and Particle Physics & Tsung-Dao Lee Institute Joint Seminar, Shanghai Jiao Tong University, Shanghai, China.

“A novel way to detect the QCD Axion” *
7/April/2021, Helsinki Cosmology Seminar, University of Helsinki, Helsinki, Finland.

“On mixed dark matter scenarios with primordial black holes”*
29/March/2021, DM+nu Forum, Particle and Nuclear Division, Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China.

“QCD axion, primordial black holes and neutron stars (a chance for detection)” *
15/March/2021, Axion Virtual Institute, CERN, Meyrin, Switzerland.

“Axion stars and primordial black holes” *
12/October/2020, INR RAS Seminar, Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia.

“Aspects of axion clumps: mergers and photon emission” *
7/October/2020, Cosmology Seminar, Tokyo Institute of Technology, Tokyo, Japan.

“On merger of axion dark matter clumps and parametric resonance of photons” *
2/July/2020, On-line “Newton 1665” seminars, Istituto Nazionale di Fisica Nucleare, INFN, Catania, Italy.

“Oscillating scale factor in an expanding universe: graviton creation and cosmological implications”
8/September/2016, Graviticulas Seminar Series, Pontifical Catholic University of Chile, Santiago, Chile.

“Statistical Mechanics Analysis of the SU(2) NJL-Model at Non-zero Chemical Potentials and Temperatures”
29/August/2012, Physics Department, University of Chile, Santiago, Chile.

CONTRIBUTED TALKS IN WORKSHOPS AND CONFERENCES (* via zoom)

“QCD Axion Searches in Non-Standard Cosmology”
13-15/October/2022, Texas Section of the American Physical Society (APS) Meeting, Rice University, USA.

“On microlensing of axion clumps” *
7-10/December/2021, Dark Sectors of Astroparticle Physics, Kavli IPMU, The University of Tokyo, Japan.

“When Axion Cosmology meets the Subaru HSC data”
16/November/2021, Annual meeting of the Particle Physics Division of the Finnish Physical Society, Finland.

“Primordial Black Holes: Implications for Dark Matter Direct and Indirect Detection” *
29/March/2021-1/April/2021, 15th Iberian Cosmology Meeting, University of Coimbra, Lisboa, Portugal.

“Primordial black holes and their implications for dark matter searches” *
24-26/March/2021, Physics Days 2021 Conference, University of Jyväskylä, Jyväskylä, Finland.

“Aspects on boson stars”
3-5/August/2019, 2nd TDLI Mini-Workshop on “New Physics at the Tera Scale”,
Shanghai Jiao Tong University, Shanghai, China.

“QCD axion stars in cosmology and astrophysics” 3-7/June/2019, 43rd Johns Hopkins Workshop, KAVLI-IPMU, The University of Tokyo, Japan.

“Dark matter axion condensates: stability and astrophysical properties”
23-27/July/2018, 12th International Conference Identification of DM 2018, Brown University, Rhode Island, USA.

“Axion dark matter clump”
21-23/February/2018, UCLA Dark Matter 2018 Symposium, University of California, Los Angeles, USA.

“Analysis of dark matter axion clumps”
1-2/August/2017, Sixth Annual Cosmology Workshop, Center for Theoretical Physics, Massachusetts Institute of Technology, Boston, USA.

“Graviton creation by small scale factor oscillations in an expanding universe” 28-29/July/2016, Fifth Annual Cosmology Workshop, Center for Theoretical Physics, Massachusetts Institute of Technology, Boston, USA.

“Graviton Creation by small scale factor oscillations in an expanding universe” 10-15/July/2016, 21st International Conference on General Relativity and Gravitation, Columbia University, NY, USA.

BROADCAST INVITED TALKS

“Chemical Evolution of the Universe”
16/November/2012, Broadcast talk about physics and astronomy, University of Valparai so, Valparai so, Chile.