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DRSTP Newsletter

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Annual report




Delta ITP

ITP Utrecht


The Netherlands has a long tradition in theoretical physics which involves research performed at university institutes, industrial laboratories, and government institutions. The strength of this research area is, for a large part, based on the unity of methods employed in a wide range of applications. This manifests itself both in scientific research and in academic education.

The Dutch Research School of Theoretical Physics (DRSTP) was established in 1993 to structure and coordinate the graduate education in theoretical physics. The school is a cooperation between the theoretical physics groups of six Dutch universities: University of Amsterdam (UvA), Vrije Universiteit Amsterdam (VUA), University of Groningen (RUG), Leiden University (UL), Radboud University Nijmegen (RU), Utrecht University (UU) (commissioner) and of the National Institute for Subatomic Physics (Nikhef). In addition, there are several associate members.

The DRSTP was accredited in 1994 by the Royal Netherlands Academy of Arts and Sciences (KNAW)/Research School Accreditation Committee (ECOS) (Erkenningscommissie Onderzoekscholen) and reaccredited in 1999, 2004 and 2010.

In 2017 members of a selected review committee (Prof. Daan Frenkel; Prof. Anne Davis and Prof. Peter Wölfle) were asked to perform a review of the DRSTP over the period 2010-2016, in accordance with the Standard Evaluation Protocol (2015-2021). The School scored three times excellent for:
Quality of the PhD educational programme;
Relevance of the DRSTP's educational activities to society;
Viability of the DRSTP.

The School has been accredited for another six years (2017-2023). A detailed report from the committee members is available here.
This report presents the review and assessments by the committee, based on the information in the provided documentation and gathered during the site visit on 3 February 2017 in Utrecht. This recognizes and endorses the prominent role the DRSTP has been playing in the Dutch Theoretical Physics community since its inception in 1994 in maintaining high standards of excellence in both research and graduate education.

* Reaccreditation News, 29 November 2017
* Article Leidsch Dagblad, 1 November 2017

The Mission Statement provides further details about the objectives of the DRSTP.

Jiansen Zheng MSc (UU)
Monday 18 March 2019; 14h30
Promotors: Prof. R.A. Duine; Prof. H.T.C. Stoof
Title thesis: Spin transport beyond electrons: ferromagnetic insulators and antiferromagnetic metals
Academy Building, University Hall, Senaatszaal, Domplein 29, Utrecht

Upcoming DRSTP events:

DRSTP National Seminar Theoretical High Energy Physics, Friday 22 March 2019

DRSTP Statistical Physics and Theory of Condensed Matter (SPTCM) School, 25 March - 5 April 2019

DRSTP Symposium Trends in Theory, 16 + 17 May 2019

Upcoming Delta ITP events:

Delta ITP Triangle meetings: Holography:
22 February 2019/Leiden
29 March 2019/Amsterdam
26 April 2019/Utrecht
24 May 2019/Groningen

Delta ITP Triangle meetings: Quantum and Topological Matter
15 February 2019/Leiden, Huygens Lab, HL 226
Time: 14h00-18h00
Local organizer: Vadim Cheianov

14:00: Tea & Coffee

14:30: Talk 1: Alexander Monin (Lausanne): Effective Field Theory for CFTs with large charge

Abstract: In a generic conformal field, theory the spectrum of operators carrying a large U (1) charge can be analyzed semiclassically. The key is the operator state correspondence by which such operators are associated with a finite density superfluid phase for the theory quantized on the cylinder. The dynamics is dominated by the corresponding Goldstone hydrodynamic mode and the derivative expansion coincides with the inverse charge expansion. I will illustrate this situation by first considering simple quantum mechanical analogues and then will systematize the approach by employing the coset construction for non-linearly realized space-time symmetries.
Focussing on a 3-dimensional theory, I will illustrate that the three point function coefficients turn out to satisfy universal scaling laws and correlations as the charge and spin are varied.
Lastly, I’ll show how the approach can be generalized to the case of large spin by considering vortices in the superfluid.

15:20: Talk 2: Oleksandr Gamayun (Amsterdam): Relaxation in classical integrable systems

Abstract: I will consider non-equilibrium dynamics in the classical integrable systems. Integrability techniques allow finding the exact form of the large time asymptotic profile, which I will present as an analog of the Eigenstate State Thermalization Hypothesis. My main examples will be relaxation dynamics in one-dimensional Bose gases, formulated as an initial value problem for the classical nonlinear Schrodinger equation and domain wall "melting” in XXZ magnetic.

16:00: Coffee break

16:30: Talk 3: Mikael Fremling (Utrecht): Hall viscosity and composite fermions

Abstract: In this talk, I will review the connection between the topological "shift", which can be used to differentiate between fractional quantum hall trial wave functions, and the anti-symmetric (Hall) viscosity response of a 2D-fluid. The "shift", which is easy to establish theoretically, will be difficult (probably impossible) to measure directly in experiments, but the hope is that the topological characteristics will make itself known through other measurable properties, such as the aforementioned Hall viscosity.
To theoretically compute Hall viscosity one may compute the Berry curvature related to area deformations on a flat geometry (i.e. a torus).
However to write down wave functions for the torus (except in the simplest cases) has proven much more difficult than for the spherical geometry and infinite plane.
I will then discuss the latest developments in constructing composite fermion trial wave functions on the torus, and touch upon the importance of modular covariance as a physical constraint of the wave function.

Drinks and snacks afterwards

Delta ITP Triangle meetings: Theoretical Cosmology:
1 March 2019/Utrecht

Advanced Topics in Theoretical Physics II (spring 2019)

Last update: 13-02-2019, 09.17