埃利斯-布朗尼科夫虫hole中光子传播与引力透镜的有效场论修正
EFT Corrections to Photon Propagation and Gravitational Lensing in an Ellis-Bronnikov Wormhole
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中文总结 AI 辅助
研究EB虫hole的强引力透镜，推导电磁场与时空曲率非最小耦合的修正光子传播定律，发现特定EFT相互作用可提供区分虫hole与黑洞的独特透镜特征。
中文摘要 AI 辅助
我们研究了存在有效场论（EFT）对光子传播的修正时，埃利斯-布朗尼科夫（EB）虫hole的强引力透镜效应。我们推导了由电磁场与时空曲率之间的非最小耦合诱导的修正光子传播定律，这会导致EB虫hole时空中依赖偏振的光子轨迹。利用强偏转极限，我们推导了光子球的修正以及偏转角的对数发散部分。尽管EFT修正的参数很小，但它们的贡献在光子球附近会变得明显。特别地，$R_{\mu\nu}F^{\mu\rho}F^{\nu}{}_{\rho}$这种相互作用在EB虫hole中存在，而在史瓦西时空中不存在，它对强偏转系数有贡献，这可能提供一个独特的透镜特征，用于观测区分虫hole和黑洞。
英文摘要
We investigate strong gravitational lensing by an Ellis-Bronnikov (EB) wormhole in the presence of effective field theory (EFT) corrections to photon propagation. We derive the modified photon propagation law induced by non-minimal couplings between the electromagnetic field and spacetime curvature, which leads to polarization-dependent photon trajectories in the EB wormhole spacetime. Using the strong deflection limit, we derive the corrections to the photon sphere and the logarithmically divergent part of the deflection angle. Although the EFT corrections are parametrically small, their contributions can become appreciable near the photon sphere. In particular, the $R_{μν}F^{μρ}F^ν{}_ρ$ interaction, which is nonvanishing for the EB wormhole but absent in the Schwarzschild spacetime, contributes to the strong-deflection coefficients. This may provide a distinctive lensing signature for observationally distinguishing wormholes from black holes.
