# The Symmetries of QCD

## Abstract

The symmetries of a quantum field theory can be realized in a variety of ways. Symmetries can be realized explicitly, approximately, through spontaneous symmetry breaking or, via an anomaly, quantum effects can dynamically eliminate a symmetry of the theory that was present at the classical level. Quantum Chromodynamics (QCD), the modern theory of the strong interactions, exemplify each of these possibilities. The interplay of these effects determine the spectrum of particles that we observe and, ultimately, account for 99% of the mass of ordinary matter.

- Authors:

- Publication Date:

- Sponsoring Org.:
- USDOE

- OSTI Identifier:
- 987433

- Resource Type:
- Multimedia

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FIELD THEORY; SYMMETRY; PARTICLE THEORY

### Citation Formats

```
Chivukula, Sekhar.
```*The Symmetries of QCD*. United States: N. p., 2009.
Web.

```
Chivukula, Sekhar.
```*The Symmetries of QCD*. United States.

```
Chivukula, Sekhar. Wed .
"The Symmetries of QCD". United States. https://www.osti.gov/servlets/purl/987433.
```

```
@article{osti_987433,
```

title = {The Symmetries of QCD},

author = {Chivukula, Sekhar},

abstractNote = {The symmetries of a quantum field theory can be realized in a variety of ways. Symmetries can be realized explicitly, approximately, through spontaneous symmetry breaking or, via an anomaly, quantum effects can dynamically eliminate a symmetry of the theory that was present at the classical level. Quantum Chromodynamics (QCD), the modern theory of the strong interactions, exemplify each of these possibilities. The interplay of these effects determine the spectrum of particles that we observe and, ultimately, account for 99% of the mass of ordinary matter. },

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {2009},

month = {3}

}