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| Main Author: | |
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| Format: | Recurso digital |
| Language: | English |
| Published: |
Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.19640355 |
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Table of Contents:
- <p>We study a minimal extension of the Ginzburg–Landau framework incorporating a global quadratic coupling of the order parameter and a slowly varying environmental modulation field. The global term introduces a non-local interaction acting exclusively on the zero-momentum sector, while the environmental field modulates the local effective mass. We show at the Gaussian (quadratic) level that the model leads to:<br>(i) a finite-size dependent shift of the homogeneous mode mass,<br>(ii) suppression of infrared fluctuations in the zero-momentum sector, and<br>(iii) separation between homogeneous and finite-momentum fluctuations.<br>The model remains analytically tractable and reduces to standard Ginzburg–Landau theory in the limit of vanishing global coupling.</p>