Taylor Tomasz R, Zhu Bin
Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland.
Phys Rev Lett. 2024 May 31;132(22):221602. doi: 10.1103/PhysRevLett.132.221602.
It is shown that there exists a simple deformed version of Strominger's infinite-dimensional w_{1+∞} algebra of soft graviton symmetries, which we conjecture to arise in spacetimes with a nonvanishing cosmological constant. The deformed algebra contains a subalgebra generating SO(1,4) or SO(2,3) symmetry groups of dS_{4} or AdS_{4}, depending on the sign of the cosmological constant. The transformation properties of soft gauge symmetry currents under the deformed w_{1+∞} are also discussed.
结果表明，存在一种史特罗明格（Strominger）软引力子对称性的无穷维(w_{1 + \infty})代数的简单变形版本，我们推测它出现在具有非零宇宙学常数的时空中。根据宇宙学常数的符号，变形代数包含一个生成(dS_{4})或(AdS_{4})的(SO(1,4))或(SO(2,3))对称群的子代数。还讨论了软规范对称流在变形的(w_{1 + \infty})下的变换性质。
