| Saturday 15 February 2025 | |
| Events for day: Wednesday 19 February 2025 |
Winter school on Physics of Complex Fluids PHYSICS Winter school on Physics of Complex Fluids (PCF) School of Physics, IPM February 19-20, 2025 (Esfand 1-2, 1403) The Winter School on Complex Fluids aims to enhance the knowledge of postdoctoral researchers and graduate students, particularly at the doctoral level, in the physics of fluids and complex systems. This program provides an in-depth exploration of the physics of complex fluids and hydrodynamic phenomena in soft and dispersed materials, delivering a solid foundation in these fields. The school covers a diverse range of materials with physical and mechanical properties between those of liquids and ... 11:00 - 12:00 Wednesday Weekly Seminar - Virtual Format Sandwich Quantum Constraints, Strings and Null Branes School PARTICLES AND ACCELERATORS Abstract: We revisit the canonical quantization of free bosonic closed string theory and observe that the physicality of states requires vanishing of the worldsheet Virasoro algebra generators sandwiched between any two physical states. This requirement yields four classes of physical states, depending on discrete worldsheet symmetries: parity and time reversal. The usual string states which are highest weight states of the Virasoro algebra, preserve both, while the other new three classes break one or both. We initiate the quantization of a null p-brane in light-cone gauge using the idea of sandwich quantum constraints and sho ... |