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arXiv 1002.4873hep-thastro-ph.COgr-qc
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Derrick超越位势定理

Derrick's theorem beyond a potential

Solomon Endlich, Kurt Hinterbichler, Lam Hui, Alberto Nicolis, Junpu Wang

摘要:

已知具有导数相互作用的标量场理论具有孤子激发,但是这样的孤子通常是不令人满意的,因为有效理论恰好在非线性对孤子很重要的地方失效。一个新的理论类拥有(内部)伽利略不变性可以在原则上绕过这个困难。在这里,我们表明,这些伽利略理论不具有稳定的孤子解。作为一个副产品,我们表明,不存在稳定的孤子为不同类别的衍生耦合理论,描述例如超流体,流体,固体和一些K-本质模型的红外动力学。

英文摘要:

Scalar field theories with derivative interactions are known to possess solitonic excitations, but such solitons are generally unsatisfactory because the effective theory fails precisely where nonlinearities responsible for the solitons are important. A new class of theories possessing (internal) galilean invariance can in principle bypass this difficulty. Here, we show that these galileon theories do not possess stable solitonic solutions. As a by-product, we show that no stable solitons exist for a different class of derivatively coupled theories, describing for instance the infrared dynamics of superfluids, fluids, solids and some k-essence models.

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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