FieldsElementary particles, fields, and strings

Open String Field Theory Beyond Feynman Diagrams

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

Researchers from Japan have found a novel non-equilibrium 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

Quantum Anomaly in a Dirac Fermion System with Spacetime Dependent Mass

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.

Theoretical Particle Physics

Elementary particles, fields, and strings

Using Pulsed Cold Neutrons to Measure Neutron Lifetime

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 Time-evolving Classical Fields

A set of field configurations (replicas) reaches equilibrium of quantum field theory after real-time evolution obeying classical equations of motion.

Elementary particles, fields, and strings

Antimatter Matters: Making Sense of the Matter–Antimatter Asymmetry at Japan’s Belle-II Facility

Scientists embark on a quest to unravel the mysteries behind matter–antimatter asymmetry in our universe with the new Belle-II experiment at the SuperKEKB accelerator in Japan.

Elementary particles, fields, and strings

The Thin Edge of Entanglement Wedges and Progress in Quantum Gravity

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?

The Belle-II experiment is designed to explore new mechanisms of matter-antimatter asymmetry that may resolve the mystery behind the dominance of matter over anti-matter in the universe.

Elementary particles, fields, and strings