Related Experiment Video
Updated: Jul 24, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Nucleation at Finite Temperature: A Gauge-Invariant Perturbative Framework
Johan Löfgren1, Michael J Ramsey-Musolf2,3,4,5, Philipp Schicho6
1Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
We developed a gauge-invariant method to calculate bubble nucleation rates in high-temperature theories. This framework aids in understanding electroweak baryogenesis and cosmic phase transitions for gravitational wave signals.
Area of Science:
- Theoretical Physics
- Cosmology
- Particle Physics
Background:
- Radiative symmetry breaking at high temperatures is crucial for early universe cosmology.
- Calculating bubble nucleation rates is essential for understanding phase transitions.
- Existing methods often lack gauge invariance, complicating theoretical predictions.
Purpose of the Study:
- To present a novel gauge-invariant framework for computing bubble nucleation rates.
- To establish a practical perturbative method for high-temperature expansions.
- To enable accurate predictions for cosmological phenomena.
Main Methods:
- Developed a gauge-invariant perturbative framework.
- Applied consistent power counting in the high-temperature expansion.
- Focused on leading-order nucleation rate calculations.
Main Results:
- Established a practical, gauge-invariant method for calculating nucleation rates.
- The framework is based on a consistent high-temperature expansion.
- Provides a reliable tool for theoretical computations.
Conclusions:
- The presented framework offers a significant advancement in calculating bubble nucleation.
- It has direct applications in electroweak baryogenesis and gravitational wave signal predictions.
- Facilitates more accurate modeling of cosmic phase transitions.
More Related Videos
07:02Studying the Effects of Temperature on the Nucleation and Growth of Nanoparticles by Liquid-Cell Transmission Electron Microscopy
Published on: February 17, 2021
08:52Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
Published on: April 30, 2018
Related Concept Videos
Atomic Spectroscopy: Effects of Temperature
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature...
Fermi Level Dynamics
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Heat Capacities of an Ideal Gas III
Heat Capacities of an Ideal Gas II
Kinetic Theory of an Ideal Gas
The number of molecules in one mole is called...
Atomic Nuclei: Nuclear Spin State Population Distribution