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Peter Freund

Peter Freund is a astronomy 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 Freund rather than just read about it. In short: Peter George Oliver Freund (7 September 1936, Timișoara – 6 March 2018, Chicago) was a professor of theoretical physics at the University of Chicago. He made important contributions to particle physics and string theory.

Key takeaways

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

Reference excerpt

Peter George Oliver Freund (7 September 1936, Timișoara – 6 March 2018, Chicago) was a professor of theoretical physics at the University of Chicago. He made important contributions to particle physics and string theory. He was also active as a writer.

Biography Peter George Oliver Freund was born, raised and educated in the Romanian city of Timișoara. He was of Hungarian-Jewish origin. His father, Josef Freund (1901-1982), was a surgeon and gynecologist, a graduate of universities in Germany, who in 1935 founded a private clinic in the center of Timișoara known as the Freund Sanatorium (Sanatoriul Freund). His mother, Rózsi, a Hungarian opera singer by profession, was born in Lugoj in the family of a well-known textile merchant. His father's family had settled in Timișoara since the beginning of the nineteenth century. Freund lived as a child in the center of Timișoara, in a building known as the "Färber Palace". At the age of 13, Freund was the swimming champion in the 33-meter breaststroke category in a competition between schools in Timișoara. In his hometown he attended the Politehnica University of Timișoara. Because of his participation in an anti-Soviet demonstration in November 1956, Freund was arrested by the communist security police, the Securitate, and lined up with other students between a wall and a line of tanks, essentially an armored firing squad, which, in the reigning confusion, did not fire. In 1959 he managed to leave Romania. Freund obtained his PhD in theoretical physics at the University of Vienna, with Walter Thirring as his thesis adviser. Since 1965 Freund was on the faculty of the University of Chicago. He lived in Chicago with his wife Lucy, a clinical psychologist. They have two daughters, both married (Pauline, an attorney in Seattle and Caroline, an economist in Washington, D.C.), as well as five grandchildren.

Research Freund was one of the originators of two-component duality which gave the original impetus to what then developed into string theory. He pioneered the modern unification of physics through the introduction of extra dimensions of space and found mechanisms by which the extra dimensions curl up. Freund made significant contributions, to the theory of magnetic monopoles, to supersymmetry and supergravity, to number-theoretic aspects of string theory, as well as to the phenomenology of hadrons.

Writer Beyond his work in theoretical physics, Freund was the author of the book A Passion for Discovery, World Scientific, Singapore, New York, London 2007. Over the years, in addition to scientific papers, Freund wrote short stories, and in 2001 he began publishing them. His stories appear in the online literary journal Exquisite Corpse and in other journals. In addition to short stories, Freund wrote two novellas, The Fine Underwear of Consciousness and Upside Down, as well as the novel Belonging. Together with his childhood friend, the Romanian novelist Radu Ciobanu, he wrote in the Romanian language the book Dialog peste Atlantic (Dialog Across the Atlantic), published by Emia in 2006. The book deals with the way two friends, separated for half a century, view world events, arts, science, and ultimately try to catch up on two lives lived under very different conditions: Freund managed to leave Romania for the West, while Radu Ciobanu lived through the horrors of the communist dictatorship. The book West of West End, a collection of Freund's short stories, appeared in October 2008. Another collection of short stories, Tales in a Minor Key was published in 2012.

Publications Freund, P.G.O. (1968). "Finite Energy Sum Rules and Bootstraps". Physical Review Letters. 20 (5): 235–237. Bibcode:1968PhRvL..20..235F. doi:10.1103/PhysRevLett.20.235. Freund, P.G.O. (1965). "Relation Between pi-p, p-p, and anti-p-p Scattering at High Energies". Physical Review Letters. 15 (24): 929–930. Bibcode:1965PhRvL..15..929F. doi:10.1103/PhysRevLett.15.929. Freund, P.G.O.; Arafune J.; Goebel C. J. (1975). "Topology of Higgs Fields". Journal of Mathematical Physics. 16 (2): 433. Bibcode:1975JMP....16..433A. doi:10.1063/1.522518. Freund, P.G.O.; Cho Y.M. (1975). "Nonabelian Gauge Fields as Nambu-Goldstone Fields". Physical Review D. 12 (6): 1711. Bibcode:1975PhRvD..12.1711C. doi:10.1103/PhysRevD.12.1711. Freund, P.G.O.; Kaplansky I. (1976). "Simple Supersymmetries". Journal of Mathematical Physics. 17 (2): 228. Bibcode:1976JMP....17..228F. doi:10.1063/1.522885. Freund, P.G.O.; Rubin M.A. (1980). "Dynamics of Dimensional Reduction". Physics Letters B. 97 (2): 233. Bibcode:1980PhLB...97..233F. doi:10.1016/0370-2693(80)90590-0. Freund, P.G.O. (1982). "Kaluza-Klein Cosmologies". Nuclear Physics B. 209 (1): 146–156. Bibcode:1982NuPhB.209..146F. doi:10.1016/0550-3213(82)90106-7. Freund, P.G.O. (1985). "Superstrings from Twenty-six-Dimensions?". Physics Letters B. 151 (5–6): 387–390. Bibcode:1985PhLB..151..387F. doi:10.1016/0370-2693(85)91660-0. Freund, P.G.O.; Brekke L.; Olson M.; Witten E. (1988). "Nonarchimedean String Dynamics". Nuclear Physics B. 302 (3): 365–402. Bibcode:1988NuPhB.302..365B. doi:10.1016/0550-3213(88)90207-6. Chicago Tribune

Notes

External links

Exquisite Corpse Peter Freund on INSPIRE-HEP

Worked examples

Example 1 — a first encounter with Peter Freund

Start with the simplest possible case. Write down what Peter Freund claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Freund 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 Freund 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 Freund

In research
Peter Freund appears in astronomy 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 Freund 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 Freund is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1936 births, 2018 deaths, American string theorists, so understanding it makes those chapters shorter.
In everyday life
Look for Peter Freund 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 Freund in 20 minutes

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

Frequently asked questions

What is Peter Freund in simple terms?

Peter George Oliver Freund (7 September 1936, Timișoara – 6 March 2018, Chicago) was a professor of theoretical physics at the University of Chicago. He made important contributions to particle physics and string theory.

Why does Peter Freund matter?

Because it connects several astronomy 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 Freund?

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 Freund.

Tags

  • 1936 births
  • 2018 deaths
  • American string theorists
  • Fellows of the American Physical Society
  • Politehnica University of Timișoara alumni
  • Romanian Jews
  • Romanian emigrants to the United States
  • Scientists from Timișoara
  • University of Chicago faculty
  • University of Vienna alumni

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