FieldsElementary particles, fields, and strings

PICKUPOpen String Field Theory Beyond Feynman Diagrams
202289
Theoretical physicists propose an alternative way of performing perturbative calculations in an open string field theory that has no analogy in the standard quantum field theory formalism.
Elementary particles, fields, and strings
Theoretical Particle Physics

Getting Around the Sign Problem to Solve an Open Quantum System
2022518
Researchers from Japan have found a novel nonequilibrium quantum system that doesn’t have the sign problem. The transport properties of the system are simulated with a Monte Carlo approach.Elementary particles, fields, and strings
Theoretical Particle Physics

PICKUPQuantum Anomaly in a Dirac Fermion System with Spacetime Dependent Mass
2022427
Scientists investigate quantum anomalies in a system of Dirac fermions with spacetime dependent mass and show that the anomaly formulas can be expressed in terms of superconnections.
Elementary particles, fields, and strings
Theoretical Particle Physics

PICKUPUsing Pulsed Cold Neutrons to Measure Neutron Lifetime
2021713
Scientists measure the lifetime of a neutron with pulsed neutron beams to explore the cause of a puzzling discrepancy in their previously measured lifetime.
Elementary particles, fields, and strings

Simulating Equilibrium Behavior of Quantum Fields with Timeevolving Classical Fields
202145
A set of field configurations (replicas) reaches equilibrium of quantum field theory after realtime evolution obeying classical equations of motion.
Elementary particles, fields, and strings

PICKUP
Antimatter Matters: Making Sense of the Matter–Antimatter Asymmetry at Japan’s BelleII Facility
2021322
Scientists embark on a quest to unravel the mysteries behind matter–antimatter asymmetry in our universe with the new BelleII experiment at the SuperKEKB accelerator in Japan.
Elementary particles, fields, and strings

PICKUP
The Thin Edge of Entanglement Wedges and Progress in Quantum Gravity
2021315
Scientists for the first time theoretically link quantum states and gravity, taking one step further in understanding the origins of gravity and opening doors to novel quantum applications.
Elementary particles, fields, and strings

What Happened to Antimatter?
202133
The BelleII experiment is designed to explore new mechanisms of matterantimatter asymmetry that may resolve the mystery behind the dominance of matter over antimatter in the universe.Elementary particles, fields, and strings