The fundamental energy cost of time measurement

The next Naturwissenschaftscafé will take place on Wednesday the 23rd at 20:00 in Wuk. This time Manu will talk about his master thesis on “The fundamental energy cost of time measurement” . Since he is not finished yet he will give you an introduction into Autonomous quantum clocks and show you what he did so far. For the non-physicist of you: He will try to keep it very basic so you can join the discussion as well.

  • If you are interested in the clock model and the figures of merit  he uses, it is quite instructive to read:
    Autonomous quantum clocks: does thermodynamics limit our ability to measure time?
  • For those of you interested in quantum thermodynamics in general he recommends:
    The role of quantum information in thermodynamics — a topical review



The physical interpretation of probability and the quantum theory

The next Naturwissenschaftscafé will take place on the 9th of May at 20:00 in Wuk. This time Flavio will talk about The physical interpretation of probability and the quantum theory. You may find following suggested literature helpful:

  • Book:
    “Philosophy and Probability” by Timothy Childers (pp. 33-36)
  • Extended conference paper:
    “The physical motivations for a propensity interpretation of probability, and the reactions of the community of quantum physicists” by Flavio

In order to get one of the above texts please contact e.schwarzhans(at) .

Learning & Education

In our next meeting, on the 25th of April at 20:00 in Café Tunnel, Lucas will  discuss the wide topics learning & education. Therefore, he will give a rather short impulse mainly inspired by the neurobiologist Gerald Hüther. On his homepage ( you can find a vast amount of well organized literature and talks. Especially in German, Hüther is a great speaker and Lucas highly recommends his talks. Concerning his talk, Lucas suggest the following two articles:


Why (not) vote? – A mathematical approach to the theory of Elections, grassroots democracy & the challenges of decision making in big groups

The next meeting will be on the 11th of April at 20:00, as always in Café Tunnel.
This times topic is Why (not) vote? – A mathematical approach to the theory of Elections, grassroots democracy & the challenges of decision making in big groups” and will be presented by Claude.

According to the current democratic Ideal elections ought to reflect the “will of the people”. We will examine current election methods and discuss alternative societal designs. Both will prove  to be challenging.

Basic considerations:

  • What is an election?
  • How do formal rules influence elections?
  • Can there be fair elections and how should they look like?

All of this will be analyzed using established mathematical methods of the field of economics (so called Public Choice Theory). Apart from classical philosophical-idealistic democracy theories we will see that fair elections constitute a complex as well as a hardly reachable ideal.
At the end of the discussion probably more new questions will have appeared, than we answered. On that account we will have established an exceptional and differentiated point of view on, up to this point accepted, fundamental assumptions of our society.

Suggested literature (in German):
Mathematik der Wahl: Das Arrow-Theorem – Karl Geller

  • Basic: Chapter 5.1 will probably be covered by the Talk.
  • Bonus: Chapter 5.2 bonus material.

Since the literature is neither published nor otherwise available please contact Manu ( in order to get it.

Bohmian Mechanics

The topic of our next meeting will be Bohmian Mechanics  and will be presented by Gerd. This is especially fortunate, since the next guest at our lecture series will be Antony Valentini (see ), who will talk about the The De Broglie-Bohm Pilot-Wave Theory.
As always, the meeting will take place at the Tunnel. This time we will meet on Tuesday 13.3. at 20:00.


How to charge a quantum Battery

The new semester is going to start soon and with it our Naturwissenschaftscafè is going to continue. Hopefully all of you had relaxing holidays and were able to recharge your energy.

The topic of the next meeting is going to be “How to charge a quantum Battery” and will be prepared by Ben. It will take place on the 28th of February at 19:00 in Cafè Tunnel.

To get some insight on the topic please consider reading the provided literature:

  • To get the idea of why it is even important to think about the problem of charging a battery please read Enhancing the charging power of quantum batteries:
  • To read into the protocol Ben is using, you can read Page 12-14 of Precision and Work Fluctuations in Gaussian Battery Charging:

Since this is a rather specialized topic and we are a very interdisciplinary community Ben will keep it rather basic. So please don’t hesitate to come if the topic makes you interested.

Besides that there will be an organizational discussion about the day and time of our meetings in the new semester and some other stuff.

Second anniversary of NWC

We are very glad to announce the second anniversary of the founding of Naturwissenschaftscafé!
Two years ago we had the idea to drink beer (or other beverages) and discuss science that we were not able to discuss in university. Well, this escalated quickly (not only the ethanol consumption) and next semester we have the first official NWC Lecture Series! (which you can btw apply at ufind: scientific realism)
To celebrate this and the fact that we actually managed to keep this regular over such a long time, we invite you to join the 2nd Birthday NWC meeting on Wednesday 14.2. 19:00h at the Tunnel.
We will discuss open questions from the last two years, the lecture series and will just sit around and drink. So please join us IMPORTANT! Even though this is a celebration for the most part, there is also important literature to prepare. Please read following paper carefully: The results will be discussed next wednesday. See you there!