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Axion Field Influence on Josephson Junction Quasipotential.
Roberto Grimaudo1, Davide Valenti1, Bernardo Spagnolo1,2
1Dipartimento di Fisica e Chimica "E. Segrè", Group of Theoretical Interdisciplinary Physics, Università degli Studi di Palermo, Viale delle Scienze, Ed. 18, 90128 Palermo, Italy.
Researchers analyzed the effect of axion fields on Josephson junctions, finding they alter the potential barrier. This provides a detectable signature for elusive axion particles.
Area of Science:
- Condensed Matter Physics
- Particle Physics
Background:
- Josephson junctions are sensitive to external fields.
- Axions are hypothetical elementary particles with potential cosmological implications.
Purpose of the Study:
- To investigate the direct impact of axion fields on Josephson junctions.
- To develop a method for detecting axion interactions using these devices.
Main Methods:
- Analysis of the effective potential barrier in Josephson junctions.
- Stochastic simulations to compute the quasipotential.
- Varying axion coupling parameters from weak to strong interactions.
Main Results:
- Axion fields induce changes in the effective potential barrier of Josephson junctions.
- The quasipotential computation method is reliable across different coupling strengths.
- A significant, detectable effect of axions on Josephson junctions was observed.
Conclusions:
- Josephson junctions offer a promising experimental platform for detecting axions.
- The study provides a theoretical framework and simulation method for axion detection.
- This research contributes to the search for elusive axion particles.
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