Energy momentum tensor and the term in the bag model
Abstract
The energy momentum tensor (EMT) form factors pave new ways for exploring hadron structure. Especially, the $$\mathit{D}$$-term related to the EMT form factor $$D_{(t)}$$ has received a lot of attention due to its attractive physical interpretation in terms of mechanical properties. We study the nucleon EMT form factors and the associated densities in the bag model which we formulate for an arbitrary number of colors N c and show that the EMT form factors are consistently described in this model in the large-$$N_c$$ limit. The simplicity of the model allows us to test in a lucid way many theoretical concepts related to EMT form factors and densities including recently introduced concepts like normal and tangential forces, or monopole and quadrupole contributions to the angular momentum distribution. We also study the $$\mathit{D}$$-terms of the ρ-meson, Roper resonance, other $$N^{\ast}$$ states, and Δ-resonances. Among the most interesting outcomes is the lucid demonstration of the deeper connection of EMT conservation, stability, the virial theorem, and the negative sign of the $$\mathit{D}$$-term.
- Publication Date:
- Research Org.:
- Univ. of Connecticut, Storrs, CT (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- OSTI Identifier:
- 1599486
- Alternate Identifier(s):
- OSTI ID: 1800172
- Grant/Contract Number:
- FG02-04ER41309; 1812423
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 101 Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics
Citation Formats
Neubelt, Matt J., Sampino, Andrew, Hudson, Jonathan, Tezgin, Kemal, and Schweitzer, Peter. Energy momentum tensor and the D term in the bag model. United States: N. p., 2020.
Web. doi:10.1103/PhysRevD.101.034013.
Neubelt, Matt J., Sampino, Andrew, Hudson, Jonathan, Tezgin, Kemal, & Schweitzer, Peter. Energy momentum tensor and the D term in the bag model. United States. https://doi.org/10.1103/PhysRevD.101.034013
Neubelt, Matt J., Sampino, Andrew, Hudson, Jonathan, Tezgin, Kemal, and Schweitzer, Peter. Wed .
"Energy momentum tensor and the D term in the bag model". United States. https://doi.org/10.1103/PhysRevD.101.034013.
@article{osti_1599486,
title = {Energy momentum tensor and the D term in the bag model},
author = {Neubelt, Matt J. and Sampino, Andrew and Hudson, Jonathan and Tezgin, Kemal and Schweitzer, Peter},
abstractNote = {The energy momentum tensor (EMT) form factors pave new ways for exploring hadron structure. Especially, the $\mathit{D}$-term related to the EMT form factor $D_{(t)}$ has received a lot of attention due to its attractive physical interpretation in terms of mechanical properties. We study the nucleon EMT form factors and the associated densities in the bag model which we formulate for an arbitrary number of colors N c and show that the EMT form factors are consistently described in this model in the large-$N_c$ limit. The simplicity of the model allows us to test in a lucid way many theoretical concepts related to EMT form factors and densities including recently introduced concepts like normal and tangential forces, or monopole and quadrupole contributions to the angular momentum distribution. We also study the $\mathit{D}$-terms of the ρ-meson, Roper resonance, other $N^{\ast}$ states, and Δ-resonances. Among the most interesting outcomes is the lucid demonstration of the deeper connection of EMT conservation, stability, the virial theorem, and the negative sign of the $\mathit{D}$-term.},
doi = {10.1103/PhysRevD.101.034013},
journal = {Physical Review D},
number = 3,
volume = 101,
place = {United States},
year = {2020},
month = {2}
}
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