physics

Peter Hänggi

Peter Hänggi is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Peter Hänggi rather than just read about it. In short: Peter Hänggi (born November 29, 1950) is a theoretical physicist from Switzerland, Professor of Theoretical Physics at the University of Augsburg. He is best known for his original works on Brownian motion and the Brownian motor concept, stochastic resonance and dissipative systems (classical and quantum mechanical).

Key takeaways

Peter Hänggi belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Peter Hänggi to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Peter Hänggi from memory before moving on to harder problems.

Reference excerpt

Peter Hänggi (born November 29, 1950) is a theoretical physicist from Switzerland, Professor of Theoretical Physics at the University of Augsburg. He is best known for his original works on Brownian motion and the Brownian motor concept, stochastic resonance and dissipative systems (classical and quantum mechanical). Other topics include, driven quantum tunneling, such as the discovery of coherent destruction of tunneling (CDT), phononics, relativistic statistical mechanics and the foundations of classical and quantum thermodynamics.

Career He studied physics and was awarded B.Sc. (1972), M.Sc. (1974) and Ph.D. degrees (1977) at the University of Basel. He was a Postgraduate Research Associate at the University of California, San Diego (1979–80), Assistant Professor of Physics, Polytechnic Institute of New York, New York (1980–1983), Associate Professor, Polytechnic Institute of New York, New York (1983–1987) and full professor at the University of Augsburg (1986 to present).

Hänggi's law The following statement is attributed as Hänggi's law:

The more trivial your research, the more people will read it and agree. It is labeled as a kind of Murphy's law and it was first seen in Arthur Bloch's work. However, the attribute's relation to Professor Hänggi's research is not clear. Corollaries:

The more vital your research, the fewer people will understand it. You write a nontrivial paper and you likely will be the only one who will remember it.

Honors and awards He was elected a Fellow of the American Physical Society in 1988 "for distinguished contributions to nonlinear statistical physics and reaction rate theory and for elucidating the influence of non-Markovian memory effects and dissipative tunneling in equilibrium and non equilibrium systems". In 2003, he was elected to membership in the German National Academy of Sciences Leopoldina, on October 14, 2005, elected membership in American Association for the Advancement of Sciences (AAAS) for distinguished contributions to the field of reaction rate theory and stochastic resonance and for discovering coherent destruction of tunneling and Brownian motors, October 2007 elected membership in the Academia Europaea (AE), 2014 elected membership in European Academy of Sciences (EURASC) and in 2015 elected foreign honorary membership in the Academia Română, in 2024 elected to the Industry Academy in the section International Artificial Intelligence Industry Alliance (AIIA). He has been honored with over 10 doctor honorary causa (Dr. h.c.) degrees. Peter Hänggi is a recipient of a number of scientific awards including

Smoluchowski Honorary Medal from Jagiellonian University (2006), Lindhard Lecture (2010), Lars Onsager Lecture and Onsager Medal (2011), Distinguished scientist award and David Ben Gurion medal, Ben-Gurion University of the Negev, Israel (10.12.2014) Blaise Pascal Medal (2018), 2019 Marian Smoluchowski and Emil Warburg Prize for Physics by the German Physical Society (DPG) and the Polish Physical Society (PTF), and 2023 Lars Onsager prize recipient of the American Physical Society (APS) for "For the development of Brownian motors and pioneering contributions to nonequilibrium statistical physics, relativistic and quantum thermodynamics." 2024 Honorary Medal De scientia et humanitate optime meritis by the Czech Academy of Sciences

Notable review papers Hänggi, Peter; Talkner, Peter; Borkovec, Michal (1990-04-01). "Reaction-rate theory: fifty years after Kramers". Reviews of Modern Physics. 62 (2): 251–341. Bibcode:1990RvMP...62..251H. doi:10.1103/RevModPhys.62.251. Gammaitoni, Luca; Hänggi, Peter; Jung, Peter; Marchesoni, Fabio (1998-01-01). "Stochastic resonance". Reviews of Modern Physics. 70 (1): 223–287. Bibcode:1998RvMP...70..223G. doi:10.1103/RevModPhys.70.223. Hänggi, Peter; Marchesoni, Fabio (2009-01-01). "Artificial Brownian motors: Controlling transport on the nanoscale". Reviews of Modern Physics. 83 (1): 387–442. arXiv:0807.1283. Bibcode:2009RvMP...81..387H. doi:10.1103/RevModPhys.81.387. S2CID 16690300. Campisi, Michele; Hänggi, Peter; Talkner, Peter (2011-07-06). "Quantum fluctuation relations: Foundations and applications". Reviews of Modern Physics. 83 (3): 771–791. arXiv:1012.2268. doi:10.1103/RevModPhys.83.771. S2CID 119200058. Li, Nianbei; Ren, Jie; Wang, Lei; Zhang, Gang; Hänggi, Peter; Li, Baowen (2012-07-17). "Phononics: Manipulating heat flow with electronic analogs and beyond". Reviews of Modern Physics. 84 (3): 1045–1066. arXiv:1108.6120. doi:10.1103/RevModPhys.84.1045. S2CID 2244763. Grifoni, Milena; Hänggi, Peter (2008-10-01). "Driven Quantum Tunnelling". Physics Reports. 304 (5–6): 229–354. doi:10.1016/S0370-1573(98)00022-2. Talkner, Peter; Hänggi, Peter (2020-10-21). "Statistical mechanics and thermodynamics at strong coupling: Quantum and classical". Reviews of Modern Physics. 62 (4): 041002-1 – 041002-26. arXiv:1911.11660. doi:10.1103/RevModPhys.92.041002. S2CID 208290906.

References

External links Homepage brief CV, data on Publons

Worked examples

Example 1 — a first encounter with Peter Hänggi

Start with the simplest possible case. Write down what Peter Hänggi claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Peter Hänggi before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Peter Hänggi ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Peter Hänggi

In research: Peter Hänggi appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Peter Hänggi in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Peter Hänggi is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1950 births, Academic staff of the University of Augsburg, Fellows of the American Physical Society, so understanding it makes those chapters shorter.
In everyday life: Look for Peter Hänggi outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Peter Hänggi in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Peter Hänggi means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Peter Hänggi out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Peter Hänggi in simple terms?

Why does Peter Hänggi matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Peter Hänggi?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Peter Hänggi.