Nuclear Seminar

«   »
Su Mo Tu We Th Fr Sa
28 29 30 1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31 1
Date/Time:Friday, 20 May 2011 from 4:10 pm to 5:10 pm
Location:Room 19 Physics Building
Contact:Prof. James Vary
Phone:515-294-8894
Channel:Nuclear Physics
Actions:Download iCal/vCal | Email Reminder
"Hamiltonians and Physical Vacua of Exactly Solvable Models",
Prof. Lubomir Martinovic,
Bogoliubov Laboratory of Theoretical Physics
JINR Dubna, Russia
and
Institute of Physics SAS,
Bratislava, Slovakia

Correct quantum Hamiltonians of a few exactly solvable models in D=2 are derived by incorporating operator solutions of the field equations to the canonical formalism. In this way, the space-like and light front Hamiltonians of the derivative-coupling models acquire a similar form. The same is true for the massive solvable theory, the Federbush model. In the conventional treatment, physical predictions in the two schemes disagree. Also, the derivative-coupling model is found to be almost identical to a free theory in both schemes. The physical vacuum state of the Thirring model is then obtained by a Bogoliubov transformation in the form of a coherent state quadratic in composite boson operators. To perform the same task in the Federbush model, we derive a massive version of Klaiber's current bosonization and show that its light front version is considerably simpler.