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iTHEMS Weekly News Letter

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iTHEMS DM working group seminar by Dr. Rinaldi

2019-10-02

iTHEMS DM working group, which aims to bridge the collider, direct, and indirect dark matter (DM) searches to obtain inclusive understandings of DM and develop new strategies for coming experiments, is launched this summer. The 1st seminar is given by Dr.Rinaldi on Oct. 1st. He talked about composite DM theory.

DM is a massive component different from ordinary matters (usually referred to as baryons) in our Universe. The nature of DM is still a big mystery and many kinds of explanations are proposed. Composite DM scenario is motivated by the origin of the mass in the standard model physics. In the standard model, the strong interaction is responsible for the proton and neutron mass hence for the mass of baryons. Considering a similar situation in the dark sector, composites of dark fermions can be DM in our Universe. The dark and the standard model sector are connected through the interaction between the constituent fermions and the standard model particles. Composite DM itself has no direct connection to our sector. This explains the non-detection of DM in the up-to-date collider, direct, and indirect experiments. Also in this scenario, the self-interaction of DM is naturally introduced. Then, it could ameliorate the small-scale problem which appears in more traditional DM scenarios. Starting from the general introduction for composite DM, his recent work based on the lattice calculations for the signatures of composite DM is also introduced. Signals from composite DM could be detected in the near future.

A series of seminars and workshops are being planned as the working group activity. Please join us!

Upcoming Events

Colloquium

iTHEMS Colloquium

Topological phases of matter and operator algebras

October 4 at 15:30 - 17:00, 2019

Prof. Yasuyuki Kawahigashi (Senior Visiting Scientist, iTHEMS)

Venue: Okochi Hall, 1F Laser Science Laboratory, RIKEN

Broadcast: R511, Computational Science Research Building, R-CCS, Kobe Campus, RIKEN / SUURI-COOL (Kyoto), #204-205, 2F Maskawa Building for Education and Research, North Campus, Kyoto University / SUURI-COOL (Sendai), #303, 3F AIMR Main Building, Advanced Institute for Materials Research (AIMR), Tohoku University

Event Official Language: English

Workshop

Workshop on Virtual Reality[Session 1]

October 7 at 13:00 - 16:00, 2019

Gilles Ferrand and Don Warren will run a workshop on using virtual reality (VR) for data visualization and research. Anyone from any RIKEN campus, and any field of study, is welcome. We want to build a cross-disciplinary group of people with a shared interest in VR, and to apply this tool to a broad range of data types and topics.

Please check the workshop website for up-to-date information !

Venue: #132, 1F, Main Research Building, RIKEN

Event Official Language: English

Seminar

Finite N corrections to the superconformal index from D3-brane analysis in AdS_5/CFT_4

October 8 at 15:30 - 17:00, 2019

Mr. Reona Arai (D2, Tokyo Institute of Technology)

Venue: Seminar Room #160, 1F Main Research Building, RIKEN

Event Official Language: English

Seminar

ABBL-iTHEMS Joint Seminar

Dark matter search in extended dwarf spheroidal galaxies with CTA

October 11 at 14:00 - 15:00, 2019

Dr. Nagisa Hiroshima (Postdoctoral Researcher, iTHEMS)

Venue: #132, 1F, Main Research Building, RIKEN

Event Official Language: English

Seminar

Math Seminar

Mean dimension of dynamical systems and information theory

October 21 - 23, 2019

Dr. Masaki Tsukamoto (Professor, Kyushu University)

Oct.21 15:30-16:30, 16:40-17:40, Okochi Hall
Oct.22 13:30-14:30, room #435-437, Main Research Building
Oct.23 13:30-14:30, room #435-437, Main Research Building

Venue: Okochi Hall, 1F Laser Science Laboratory, RIKEN / #435-437, Main Research Building, RIKEN

Event Official Language: English

Lecture

RIKEN Open Campus in Kobe thumbnail
Integrated Innovation Building (IIB) venue photo

RIKEN Open Campus in Kobe

November 9 at 10:00 - 16:30, 2019

Dr. Takumi Doi (Senior Research Scientist, iTHEMS)

RIKEN Open Campus in Kobe will be held on Nov.9, 2019.
Dr. Emiko Hiyama (Kyushu Univ.) and Dr. Takumi Doi (Nishina Center / iTHEMS) will give lectures on computational nuclear and particle physics at Kobe IIB building where SUURI-COOL Kobe is located. Please inform the news to anybody who are interested in visiting RIKEN Kobe.

Venue: Integrated Innovation Building (IIB), Kobe Campus, RIKEN

Event Official Language: Japanese

Person of the Week

Self-introduction: Enrico Rinaldi

2019-09-30

I am Enrico Rinaldi, a part-time researcher in iTHEMS, who was previously a SPDR fellow in RIKEN BNL and Quantum Hadron Physics Laboratory.
My expertise is Monte Carlo numerical simulations of quantum field theories, also known as Lattice Field Theory simulations, which use massively parallel supercomputers (CPU and GPU-based) around the world to solve the complex equations hiding the mysteries of particle physics.
My research is focused on understanding high energy strongly-coupled gauged theories, in particular in the context of extensions of the Standard Model (SM) of particle physics, like Dark Matter physics or theories of Composite Higgs. New discoveries are hinging on the theoreticians’ ability to make predictions that can be tested by experimentalists, and that is precisely the my goal.
I am also engaged in projects related to low-energy nuclear physics, for example calculating nucleon-nucleon interactions or nuclear form-factors directly from the theory of Quantum Chromo-Dynamics (QCD). Moreover, I have been working on matrix models to study the gauge/gravity duality conjecture with the aim of understanding the possible intriguing relation between gauge theories and quantum gravity.
I am currently researching new Machine Learning (ML) approaches to physics, mainly based on the promising rise of generative models. The aim is to improve our ability to get access to multi-dimensional parametric distributions describing physical systems with specific models.

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