Screening and point-like structure. zero-charge problem reexamined |
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| Institution: | 1. College of Economics and Management & China-Africa International Business School, Zhejiang Normal University, Yingbin Road 688, Jinhua, Zhejiang 321004, China;2. School of Innovation and Entrepreneurship, Shandong University, 72 Binhai Road, Jimo District, Qingdao, Shandong Province 266237, China;3. Research Center for the Belt & Road Financial and Economic Development, Xiamen National Accounting Institute, Island-Coast Express, Xiamen, Fujian 361005, China;1. University of Liechtenstein, Institute of Entrepreneurship, Fürst-Franz-Josef-Str., 9490 Vaduz, Liechtenstein;2. University of Sussex, Brighton BN1 9SL, UK;3. University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands;4. New Design University, Mariazeller Straße 97a, 3100 St. Pölten, Austria |
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| Abstract: | We study the effect of magnetic interactions on screening in abelian theories. By solving the coupled Schwinger-Dyson equations for the gauge-field propagator and the vertex function in the high momentum region, we find a nonperturbative solution whose existence implies that the screening in these theories is suppressed and the zero-charge problem may be absent. We speculate about the possible realization of this scenario in strongly coupled QED. |
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