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LIST OF ALL EVENTS

Current Event

Gravitational Waves from the Early Universe

Program

26 August — 20 September 2019

Coordinators: Axel Brandenburg, Mark Hindmarsh, Tina Kahniashvili

www.nordita.org/gw2019

Gravitational waves promise a new window into the highest-energy events in the evolution of the universe. The recent LIGO/Virgo detections of gravitational waves from the mergers of binary black holes and binary neutron stars and have ignited interest in the future direction of gravitational wave astronomy. A space-based laser interferometer, pioneered by NASA's LISA concept and the European Space Agency's eLISA program and ESA's recent spectacularly successful LISA Pathfinder mission, would enable direct detection of gravitational waves in the milliHertz range. A lower frequency range would allow detection of supermassive black hole mergers, tracing the galaxy merger history and serving as cosmic sirens to probe the universe's expansion history, as well as precursors for the LIGO sources. A space-based detector would also be sensitive to stochastic gravitational wave backgrounds produced by unknown physics operating in the very early universe, including an electroweak phase transition. This Nordita program will bring scientists together to engage in an effort to characterize and detect sources contributing to the gravitational wave background from the early universe, and the implications for new physics at the TeV scale and beyond.

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Future Events

2019

Challenges in Theoretical High-Energy Physics

Conference

23—27 September 2019

Coordinators: Agnese Bissi, Valentina Giangreco Puletti, Magdalena Larfors, Marta Orselli

www.nordita.org/challenges2019

 

Quantum Materials for Dark Matter Detection

Workshop

2—4 December 2019

Coordinators: Alexander Balatsky, Jan Conrad, Alfredo Ferella, Mathias Geilhufe, Felix Kahlhoefer, Mathew Lawson

www.nordita.org/qm4dmd2019

In the search for dark matter (DM), one particular focus is on light and ultra-light dark matter, i.e. sub-GeV mass dark matter from a hidden dark sector with a new force interacting with the standard model or ultra-light DM with mass range from 10−22 eV to keV. The arguably most popular example of the latter class is the axion, invoked to solve the apparent absence of CP violation in Quantum Chromo Dynamics. Detection of these particles poses new challenges to potential sensor materials: very small energy depositions, magnetic properties and anisotropic response to particle interactions for example become crucial requirements. The challenge of finding suitable materials fits well with recent developments in solid state physics: Motivated by the exponential growth of computational power and the resulting data, we witness the rapid adoption of functional materials prediction within the framework of materials informatics. Here, methods adapted from computer science based on data-mining and machine learning are applied to identify materials with requested target properties.

2020

Nordita Advanced Winter School 2020 on Theoretical Cosmology

School

13—24 January 2020

Coordinators: Elisa Ferreira, Guilherme Franzmann, Jerome Quintin, Ricardo Zambujal Ferreira

www.nordita.org/winterschool2020

The purpose of this winter school is to provide PHD students and young postdocs in the Nordic countries with introductory and advanced courses in a range of the most important topics in the field of theoretical cosmology. Furthermore, the school will provide a way to bring together students and young postdocs across different fields, research institutions and countries.

Particle Growth in Turbulence

Program

18 May — 12 June 2020

Coordinators: Axel Brandenburg, Bernhard Mehlig

www.nordita.org/particles2020

The question of how particles and droplets can grow in a turbulent environment is of great current interest in many fields, in astrophysics, cloud microphysics, in biology, and in the engineering sciences. For example, coagulation and condensation in turbulent clouds turn microscopic cloud droplets into rain drops. In astrophysics, planetesimals are thought to form by aggregation of microscopic dust grains in the turbulent environment surrounding a forming star. In both cases, turbulence is believed to be a crucial factor for particle growth. Yet the microscopic mechanisms determining this growth are far from understood. In the past few years there has been substantial progress in understanding the mechanisms that determine how particles move in turbulence, albeit mostly for simplified model systems. The challenge is now to understand how these mechanisms lead to rapid particle growth.

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3 Sep 2019

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