svenk.org

## Sven Köppel: Research

### Analog computing

### Reference material about analog computing

### My Publications

### Trivia

I am a theoretical physicist with a background in applied mathematics,
mathematical physics and computer science. My current research
focus is on **exotic computing**, such as analog,
quantum and neuromorphic computers.

In the past, I studied advanced numerical methods for partial differential equations. Until 2019, I worked on exascale methods for solving hyperbolic equations within the European ExaHyPE project.

I did my PhD in physics about numerical and quantum general relativity in 2019. A major research interest during my studies was exotic high energy physics and quantum field theory.

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.

Note: I am conducting research on analog computing since half a year and a couple of publications are in the pipeline. In the meantime, see for instance these publications:

- A continuous-time MaxSAT solver with high analog performance (Molnár+2018, Nature Communications).
- Analog Coupled Oscillator Based Weighted Ising Machine (Chou+2019, Nature Scientific Reports on Novel hardware and concepts for unconvential computing).
- Quantum analogue computing (Kendon+2010, PTRS)

(Note to myself: We have more then 300 papers compiled on analog computing in all kind of scientific branches and will put a literature database online soon)

You find my papers at Inspire-HEP, NASA-ADS, DBLP ArXiV. In the past, I wrote a couple of outreach press/blog posts.

You can read my PhD thesis about high-order methods in fully general-relativistic hydrodynamics and magnetohydrodynamics and my Master thesis about ultraviolet improved black holes.

The mathematics genealogy project has an entry about me. I have a ResearchGate profile and my ORCID is 0000-0003-2303-7765.

There are a couple of other *Sven Köppel* around, which are not me.
These are for instance @testpilot76,
this instagrammer or
that person in Hamburg.

I am on the web since 2000. I have a couple of older websites, for instance my old website at Goethe University.