Research
I am a theoretical physicist
with a background in quantum gravity, relativistic astrophysics,
applied mathematics and computer science. My current research
focus is on exotic computing approaches, such as
analog computing, quantum computing or
neuromorphic architectures.
Analog Computing
Analog computing is a rediscovered branch of science which was beaten
by digital (i.e. algorithmic/numeric) computing in the 1980s. In the dawn
of Moore's law, this branch of classical computing percieves a revival.
Based on the experience of programmable hardware (FPGAs), it is tangible
to build large analog circuits to solve differential equations in a
time- and energy-efficient way beyond digital computing. I am part of
a German-based team which tries to develop a prototypical analog computer
on a chip within the next few years.
There is a rich scientific landscape waiting to be discovered all around
this exotic branch of computer science and intersection between electrical
engineering, computational science and applied mathematics.
Many concepts of numerical mathematics can be transfered and connections to
other contemporary attempts to computing, namely quantum computing and
artificial intelligence, are all along the way. It is an exciting time
where analog circuits can make a radical difference in the computational
accessibility of the largest problems in the world.
Here are a few recent publications in the context of analog computing:
-
Sven Köppel, Bernd Ulmann, Lars Heimann, Dirk Killat:
analog
proceeding
peer-reviewed
About using analog computers in today's largest computational challenges.
Feb 2021
[ArXiV]
[DOI]
-
Sven Köppel, Alexandra Krause, Bernd Ulmann:
analog
preprint
Analog Computing for Molecular Dynamics.
July 2021
[ArXiV]
-
Bernd Ulmann, Sven Köppel, Dirk Killat:
analog
proceeding
peer-reviewed
Open Hardware Analog Computer for Education — Design and Application.
Sept 2021
[DOI]
-
Dirk Killat, Sven Köppel, Bernd Ulmann, Lucas Wetzel:
analog
proceeding
peer-reviewed
Solving Partial Differential Equations with Monte Carlo / Random Walk on an Analog-Digital Hybrid Computer.
Sept 2023
[ArXiV]
-
Dirk Killat, Bernd Ulmann, Sven Köppel:
analog
proceeding
peer-reviewed
Hybrid integrators with predictive overload estimation for analog computers and continuous-time ΔΣ modulators.
Dec 2023
[DOI]
Gravity and Quantum Physics
As a theoretical physicist in particle physics, my research interest is on the smallest scales.
This is why I started my studies on understanding quarks (and their dynamics, described by a
Quantum Field Theory called Quantum Chromodynamics) and later switched to quantum black holes,
which are many orders of magnitude smaller. In this exotic field of high energy physics, I wrote
a master thesis about
Ultraviolet
improved black holes. Fascinated by Einstein Field Theory, I switched my focus on numerical
relativity and gravitational waves. In 2019 I graduated with a PhD Thesis on
high-order methods in fully
general-relativistic hydrodynamics and magnetohydrodynamics. This project was carried out at
Goethe-Universität Frankfurt within a Horizon2020
collaboration with the Universities of Trento and
Durham. Within this project, called
ExaHyPE, I studied numerical methods for solving
hyperbolic partial differential equations on future exascale architectures.
-
Antonia M. Frassino, Sven Köppel, Piero Nicolini:
hep
quantum-gravity
peer-reviewed
Geometric model of black hole quantum N-portrait, extradimensions and thermodynamics.
April 12, 2016
[Inspire-HEP]
[ArXiV]
[DOI]
-
Sven Köppel, Marco Knipfer, Jonas Mureika, Piero Nicolini:
hep
quantum-gravity
quantum-gravity
peer-reviewed
Generalized Uncertainty Principle and Black Holes in Higher Dimensional Self-Complete Gravity.
Aug 2019
[Inspire-HEP]
[ArXiV]
[DOI]
-
Sven Köppel:
hep
quantum-gravity
thesis
master thesis
Ultraviolet improved black holes.
Dec 2014
[URN]
-
Francesco Fambri, Michael Dumbser, Sven Köppel, Luciano Rezzolla, Olindo Zanotti:
hep
astrophysics
peer-reviewed
ADER discontinuous Galerkin schemes for the general relativistic magnetohydrodynamics equations.
Dec 2017
[ArXiV]
[DOI]
-
Sven Köppel, Luke Bovard, Luciano Rezzolla:
peer-reviewed
hep
astrophysics
A General-relativistic Determination of the Threshold Mass to Prompt Collapse in Binary Neutron Star Mergers.
Feb 2019
[Inspire-HEP]
[ArXiV]
[DOI]
-
Michael Dumbser, Federico Guercilena, Sven Köppel, Luciano Rezzolla, Olindo Zanotti:
hep
astrophysics
peer-reviewed
A strongly hyperbolic first-order CCZ4 formulation of the Einstein equations and its solution with discontinuous Galerkin schemes.
July 31, 2017
[Inspire-HEP]
[ArXiV]
[DOI]
-
Sven Köppel:
hep
astrophysics
thesis
phd thesis
numerical relavitiy
quantum gravity
High-order methods in fully general-relativistic hydrodynamics & magnetohydrodynamics.
Jun 2019
[URN]
-
Sven Köppel, Marco Knipfer, Maximilano Isi, Jonas Mureika, Piero Nicolini:
hep
quantum-gravity
proceeding
peer-reviewed
Generalized uncertainty principle and extra dimensions.
March 13, 2017
[Inspire-HEP]
[ArXiV]
[DOI]
-
Reinarz, Charrier, Bader, Bovard, Duru, Fambri, Gabriel, Gallard, Köppel, Krenz, Rannabauer, Rezzolla, Samfass, Tavelli, Weinzerl:
peer-reviewed
hep
astrophysics
ExaHyPE: An Engine for Parallel Dynamically Adaptive Simulations of Wave Problems.
May 2020
[ArXiV]
[DOI]
See also
I also carried out physics education research between 2009
and 2019.
For publication listings, see also
Inspire-HEP,
NASA-ADS,
DBLP or
ArXiV.
I have a ResearchGate profile
and my ORCID is 0000-0003-2303-7765.
The mathematics genealogy project has an entry about me,
als DNB has one.
In the past, I wrote a couple of
outreach press/blog posts.