Roger Dashen
| Roger Dashen | |
|---|---|
| Born |
May 5, 1938 Grand Junction, Colorado |
| Died | May 25, 1995 (aged 57) La Jolla, California |
| Nationality | American |
| Alma mater | CalTech |
| Known for | Quantum field theory |
Roger Frederick Dashen (May 5, 1938 in Grand Junction, Colorado – May 25, 1995 in La Jolla) was an American theoretical physicist who studied particle physics and quantum field theory.
Dashen studied physics at the Harvard University (where he also played in the football team), where he matriculated "summa cum laude" in 1960. Then he went to Caltech, where he earned his PhD in 1964. After that, he was a professor at Caltech in 1967 and the Institute for Advanced Study in 1969. In 1986, he became a professor at the University of California, San Diego (UCSD) in 1988 was Head of Faculty. He played a leading role in the establishment of a supercomputer center at UCSD and in the establishment of the Institute for Theoretical Physics of the National Science Foundation at the University of California, Santa Barbara.
In the 1960s he worked partly in collaboration with Murray Gell-Mann with current algebras of particle physics and models with chiral symmetry. With Steven Frautschi he tried 1964 Calculation of the mass difference of protons and neutrons within the S-matrix - theory, which is attributed to electromagnetic interactions. In the 1970s, he studied with Brosl Hasslacher and André Neveu quantum field theoretical model theories (such as the Sine-Gordon model and the Gross-Neveu model) for extended particles and semiclassical approximations ([WKB approximation] []) for their analysis. They developed the Dashen-Hasslacher-Neveu method (DHN) for quantization of solitons using path integrals. After the discovery of instantons in the quantum (QCD) by Polyakov, he examined it with David Gross and Curtis Callan. In the 1980s, he worked with lattice gauge theory s and found with Neuberger (regardless of Giorgio Parisi) is an upper bound for the Higgs Boson - mass.
...
Wikipedia