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arXiv 0811.4423hep-th
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带电凝聚体中的有效拉格朗日量和量子屏蔽

Effective Lagrangian and Quantum Screening in Charged Condensate

Gregory Gabadadze, Rachel A. Rosen

摘要:

在费米子的中和背景中的带电标量的凝聚物(例如,在白矮星核的电子背景下的凝聚氦4核)进行了进一步的研究。我们讨论了一个有效的拉格朗日方法,这个系统,并表明,强屏蔽的电荷先前发现在arXiv:0806.3692在平均场近似,是一个由于声子取消的后果。由此产生的传播包含强烈修改其红外行为的条款。此外,我们评估了一个单圈费米子量子修正屏蔽势,并发现它也被抑制的声子减法。因此,带电杂质(例如,氢或氦-3核)将被冷凝物有效地屏蔽。

英文摘要:

A condensate of charged scalars in a neutralizing background of fermions (e.g., condensed helium-4 nuclei in an electron background in white dwarf cores) is investigated further. We discuss an effective Lagrangian approach to this system and show that the strong screening of an electric charge found previously in arXiv:0806.3692 in a mean-field approximation, is a consequence of a cancellation due to a phonon. The resulting propagators contain terms that strongly modify their infrared behavior. Furthermore, we evaluate a one-loop fermion quantum correction to the screened potential, and find that it is also suppressed by the phonon subtraction. Therefore, charged impurities (e.g., hydrogen or helium-3 nuclei) will be screened efficiently by the condensate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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