Theoretical Particle Physics and Cosmology at the Niels Bohr Institute Theoretical Particle Physics and Cosmology at the Niels Bohr Institute Theoretical Particle Physics and Cosmology at the Niels Bohr Institute Theoretical Particle Physics and Cosmology at the Niels Bohr Institute Theoretical Particle Physics and Cosmology at the Niels Bohr Institute

Theoretical high energy, astroparticle and gravitational physics

The Theoretical high energy, astroparticle and gravitational physics at the Niels Bohr Institute is involved in a wide scope of research activities centered around quantum theories of gauge fields, gravity and astrophysics.

Research areas include scattering amplitudes, effective field theory, black holes, holography, lattice simulations, quantum gravity, integrability, astroparticle physics, and cosmology.



















The Theoretical high energy, astroparticle and gravitational physics is a large section with a variety of research interests.

We have around 45 members, including permanent faculty, non-permanent faculty, postdocs and PhD students. In addition we have a number of affiliate professors and emeritus professors that contribute to the section as well. We work closely with the Niels Bohr International Academy (NBIA) and the Discovery Center for particle physics. 

We have two seminar series HET-seminar and HET-Discovery seminar with 1-2 seminar per week (see these events in the Calendar). In addition we have a seminar series in Astroparticle Physics. We have periodically one or more journal clubs. 

We are very focussed on teaching and supervision. We have our own 1-year study track that have attracted many Danish and international master students. Moreover, a large number of master students writes a thesis with us.



The Niels Bohr institute has many M.Sc. and PhD students. The students are closely attached to the research groups and supervisor, and have many social activities for International and Danish students.

If you are interested in studying Particle Physics and Cosmology, consider looking at these pages:

General information about the education, application, living in Denmark etc.







































The main themes of our research are:

Theoretical particle physics:

The theoretical framework of Particle physics is Quantum Field Theory, on which we have several experts. We explore exciting new theoretical techniques in computing scattering amplitudes that aim to revolutionize our understanding of Quantum Field Theory as a framework of particle physics, and possibly replace it with an entirely new formulation. Furthermore, we use these and other methods to study the phenomenology of particle physics for use in predictions for particle accelerators.

Gravity, gravitational waves and black holes:

Classical gravity (i.e. gravity without quantum effects included) is formulated successfully by Einsteins theory of General Relativity. This theory explains fascinating physical phenomena such as black holes and gravitational waves. We study the powerful new techniques to compute gravitational waves using methods developed for particle physics scattering amplitudes. This is important for future measurements of gravitational waves. We study extensions of General Relativity (e.g. in higher-dimensions, with cosmological constant, and to non-relativistic geometries) and correspondences between gravity and fluid physics. Furthermore, regarding black holes we study theoretical aspects of astrophysical phenomena such as jet-physics and black hole shadows.

Theoretical high-energy physics:

In theoretical high-energy physics we consider the most fundamental building blocks of nature. The central goal is to unify the theory of gravity, namely General Relativity, with the theory of particle physics, i.e. Quantum Field Theory. A highly successful modern approach to this is the Holographic Principle as formulated by the AdS/CFT correspondence. This correspondence is formulated in the framework of String Theory and M-theory. We have several experts in our section working on these topics and more. Among the fields of study are quantum gravity, the quantum nature of black holes, and integrable models.

Astroparticle physics:

Our research interests lie at the boundary between fundamental physics, astrophysics and cosmology. We focus on weakly interacting particles, such as the Neutrino, cosmic rays and gamma-rays. Those particles are abundantly produced in the most energetic astrophysical events, ranging from supernovas and neutron-star mergers to active galactic nuclei, as well as in the Early Universe. We aim at unveiling the nature of those particles, and at using them as probes of the inner working of a range of astrophysical sources and our Universe.  


Cosmology concerns the physics of the largest scales in our universe. This is closely tied to the origin of the universe and thereby also to particle and high-energy physics. In particular, we study the measurements of the Cosmic Microwave background which gives us a picture of how the universe looked shortly after its birth.









































The Neutrino Astrophysics group at the Niels Bohr Institute aims at unveiling the nature of fascinating weakly interacting elementary particles, such as the neutrino, and at using them as probes of the engine behind the most energetic transients in our Universe.

Read more about the AstroNu project here >>

Astroparticle Physics Group

The interface between astrophysics & cosmology and fundamental physics is undergoing a revolution. Studies of the Hubble expansion, surveys of galaxies and maps of the cosmic microwave background have provided a wealth of data which have answered basic questions concerning the geometry and content of the universe. 

Read more about the Astroparticle physics group here >>

Deep Space project

The Deep Space project is based on scientific collaboration between the Niels Bohr Institute, Copenhagen University and University California (Santa Barbara), USA under supervision of Prof. P. Naselsky and Prof. P. Lubin.

Read more about the Deep Space project here >>

Gravity from Particle Amplitudes

Measurements of gravitational waves by the LIGO/Virgo detectors open up the exciting possibility of testing theories of gravity, including the regime of strong gravity as probed by black holes just prior to merging.

Read more about Gravity and particle amplitudes here >>

Integrability and Beyond

Our research lies within the framework of the AdS/CFT correspondence linking gauge theories and string theories. Currently, the main direction of investigation is defect conformal field theories based on maximally supersymmetric Yang Mills theory and the dual probe brane models.

Read more about Integrability and Beyond

Modern approaches to scattering amplitudes

Recent years have seen tremendous advances in both our understanding of quantum field theory and in our ability to make predictions for experiment. The predicted probabilities for all the possible outcomes of any experiment are encoded by functions called scattering amplitudes. 

Read more about Modern approaches to scattering amplitudes >>

Non-relativistic geometry and holography

The goal is to investigate non-relativistic limits of gravity, string theory and holography, using recent advances in non-relativistic geometry as an important tool in the covariant formulation of these limits. Specific topics include strong non-relativistic gravity, string theory on torsional Newton-Cartain backgrounds and limits of AdS/CFT known as Spin Matrix theory.

Read more about Non-relativistic geometry and holography >>

Strong Group

The Strong Group is a research group under the Niels Bohr International Academy that explores the influence of gravitational waves in the dynamics of several systems. The Strong Group focuses on strong-field gravity, including black hole spectroscopy, tests of the black hole paradigm and tests of extensions of General Relativity.

Read more about the STRONG group >> 

Systematic Development of the SMEFT for the Study of the Higgs Boson

The Effective Field Theory research group is focused on the systematic development of the Standard Model Effective Field Theory and interpreting the data coming out of the Large Hadron collider at CERN in Run II.

Thermodynamics of Strongly Coupled Quantum Field Theories

The aim of this project is to develop new theoretical methods to understand the thermodynamics of strongly coupled quantum field theories in general, and the quark-gluon plasma and its transition to ordinary matter in particular.

Read more abput Thermodynamics of Strongly Coupled Quantum Field Theories>>


















































































Zofia Lykke Kohring
Blegdamsvej 17, 2100 København Ø.
Phone: +45 35 32 52 10

Emil Bjerrum-Bohr, Associate Professor
Head of section
Blegdamsvej 17, Building: Bb1
2100 København Ø.
Phone: +45 20 56 53 28













Name Title Image
Search in Name Search in Title
Ambjørn, Jan Professor Emeritus Billede af Ambjørn, Jan
Andersen, Benjamin Halager Enrolled PhD Student Billede af Andersen, Benjamin Halager
Armas, Jácome Saldanha N d O B External Billede af Armas, Jácome Saldanha N d O B
Bjerrum-Bohr, Emil Associate Professor - Promotion Programme Billede af Bjerrum-Bohr, Emil
Blaauw, Sylvia Secretary Billede af Blaauw, Sylvia
Bustamante, Mauricio Assistant Professor Billede af Bustamante, Mauricio
Cardoso, Vitor Professor Billede af Cardoso, Vitor
Carullo, Gregorio Postdoc Billede af Carullo, Gregorio
Chalabi, Adam Postdoc Billede af Chalabi, Adam
Chan, Juno PhD Fellow Billede af Chan, Juno
Chen, Gang Postdoc Billede af Chen, Gang
Chen, Yifan Postdoc Billede af Chen, Yifan
Christensen, Per Rex Associate Professor Emeritus Billede af Christensen, Per Rex
Cocco, Marta Enrolled PhD Student Billede af Cocco, Marta
Damgaard, Poul Henrik Professor Billede af Damgaard, Poul Henrik
De Amicis, Marina PhD Fellow Billede af De Amicis, Marina
Dyson, Conor PhD Student Billede af Dyson, Conor
Døssing, Thomas Associate Professor Emeritus Billede af Døssing, Thomas
Ester, Evelyn-Andreea PhD Fellow Billede af Ester, Evelyn-Andreea
Ezquiaga, Jose Maria Assistant Professor Billede af Ezquiaga, Jose Maria
Fiorillo, Damiano Francesco G Postdoc Billede af Fiorillo, Damiano Francesco G
Frellesvig, Hjalte Axel Postdoc Billede af Frellesvig, Hjalte Axel
Goimil García, Manuel PhD Fellow Billede af Goimil García, Manuel
Grilli, Elisa Enrolled PhD Student Billede af Grilli, Elisa
Groth, Kathrine Mørch PhD Fellow Billede af Groth, Kathrine Mørch
Hansen, Marie Cornelius PhD Fellow Billede af Hansen, Marie Cornelius
Harmark, Troels Associate Professor, Head of Section Billede af Harmark, Troels
Have, Emil Postdoc Billede af Have, Emil
Heinesen, Asta Postdoc Billede af Heinesen, Asta
Høst, Mette External Consultant Billede af Høst, Mette
Jackson, Andrew D. Emeritus Billede af Jackson, Andrew D.
Jensen, Dennis Finance Trainee Billede af Jensen, Dennis
Jensen, Peter Fobian Finance Officer Billede af Jensen, Peter Fobian
Kastha, Shilpa Postdoc Billede af Kastha, Shilpa
Katagiri, Takuya Postdoc Billede af Katagiri, Takuya
Kohring, Zofia Merie Section Secretary Billede af Kohring, Zofia Merie
Kozçaz, Can Guest Researcher Billede af Kozçaz, Can
Kristjansen, Charlotte Fløe Professor Billede af Kristjansen, Charlotte Fløe
Leider, Randi Henneberg Office Trainee Billede af Leider, Randi Henneberg
Liu, Zhengwen Assistant Professor Billede af Liu, Zhengwen
Lo, Ka Lok (Rico) Postdoc Billede af Lo, Ka Lok (Rico)
Martinez Mirave, Pablo Postdoc Billede af Martinez Mirave, Pablo
Mathiesen, Joachim Head of Department Billede af Mathiesen, Joachim
Morales I Espasa, Roger PhD Fellow Billede af Morales I Espasa, Roger
Mukkamala, Gowtham Rishi Research Assistant Billede af Mukkamala, Gowtham Rishi
Nasselski, Pavel Emerita Billede af Nasselski, Pavel
Nielsen, Holger Frits Bech Emeritus Billede af Nielsen, Holger Frits Bech
Obers, Niels Anne Jacob Professor Billede af Obers, Niels Anne Jacob
Olesen, Poul Emeritus Billede af Olesen, Poul
Orselli, Marta No job title Billede af Orselli, Marta
Panosso Macedo, Rodrigo Postdoc Billede af Panosso Macedo, Rodrigo
Pereñiguez Rodriguez, David Postdoc Billede af Pereñiguez Rodriguez, David
Pethick, C. J. Emeritus Billede af Pethick, C. J.
Pica, Daniele Enrolled PhD Student Billede af Pica, Daniele
Pitik, Tetyana External Billede af Pitik, Tetyana
Platania, Alessia Benedetta Assistant Professor Billede af Platania, Alessia Benedetta
Qian, Xin PhD Student Billede af Qian, Xin
Redondo Yuste, Jaime PhD Fellow Billede af Redondo Yuste, Jaime
Rudolph, Annika Lena External Billede af Rudolph, Annika Lena
Seltmann, Martin Ulrich PhD Fellow Billede af Seltmann, Martin Ulrich
Shalgar, Shashank Assistant Professor Billede af Shalgar, Shashank
Sieverding, Andre Postdoc Billede af Sieverding, Andre
Skowronek Santos, Marcos Student Assistant Billede af Skowronek Santos, Marcos
Spieksma, Thomas PhD Fellow Billede af Spieksma, Thomas
Su, Chenliang Enrolled PhD Student Billede af Su, Chenliang
Tamborra, Irene Professor Billede af Tamborra, Irene
Telalovic, Bernanda PhD Fellow Billede af Telalovic, Bernanda
Tiwari, Apoorv Assistant Professor Billede af Tiwari, Apoorv
Ulfbeck, Ole Carsten Associate Professor Emeritus Billede af Ulfbeck, Ole Carsten
Vujeva, Luka PhD Fellow Billede af Vujeva, Luka
Wilhelm, Matthias Associate Professor Billede af Wilhelm, Matthias
Wood, Mary Postdoc Billede af Wood, Mary
Zarembo, Konstantin Professor Billede af Zarembo, Konstantin
di Vecchia, Paolo Emeritus Billede af di Vecchia, Paolo
van de Meent, Maarten Assistant Professor Billede af van de Meent, Maarten
von Hippel, Matthew Hans Benjamin Research Assistant Billede af von Hippel, Matthew Hans Benjamin

External staff & students

Navn Titel Telefon E-mail
Kim Splittorff Deputy head of department +45 24892498
Marta Orselli Affiliate associate professor    
Jácome Saldanha Armas    +45 35325200