Non-Relativistic BMS algebra
نویسندگان
چکیده
We construct two possible candidates for the non-relativistic bms4 algebra in four space-time dimensions by contracting the original relativistic bms4 algebra. The bms4 algebra is infinitedimensional and it contains the generators of the Poincaré algebra, together with the so-called super-translations. Similarly, the proposed nrbms4 algebras can be regarded as two infinitedimensional extensions of the Bargmann algebra. We also study a canonical realisation of one of these algebras in terms of the Fourier modes of a free Schrödinger field, mimicking the canonical realisation of the relativistic bms4 algebra using a free Klein-Gordon field.
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