对Erik Verlinde的《涌现引力与暗宇宙》的评论
Comment on "Emergent Gravity and the Dark Universe" by Erik Verlinde
AI总结:
针对Verlinde的涌现引力理论,指出其推导米尔格罗姆常数时假设宇宙为平坦德西特空间的不确定性,通过重新分析星系旋转曲线发现更偏好比原理论小约30%的米尔格罗姆常数值,且与FLRW宇宙下的结果一致。
摘要:
Verlinde提出了一种名为“涌现引力”的新引力理论,该理论与暗物质理论的替代方案——修正牛顿动力学(Modified Newtonian Dynamics)相似。对于他版本的米尔格罗姆常数,他假设我们的宇宙是平坦的德西特空间(这一点并不确定为真),理论上推导出$a_M=cH_0/6=1.1×10^{-10}$m/s²。2022年,当Park和我们将Verlinde的涌现引力应用于星系旋转曲线时,发现更偏好略小的$a_M$值。我们重新运行代码,得到比Verlinde原始米尔格罗姆常数值小约30%的值是最受偏好的,这与最近将Verlinde的涌现引力应用于一般FLRW宇宙所得到的值一致。
英文摘要:
Verlinde suggested a new theory of gravity called ``emergent gravity,'' which resembles Modified Newtonian Dynamics, the alternative to dark matter theory. For his version of Milgrom's constant, he theoretically derived $a_M=cH_0/6=1.1\times 10^{-10}$m/s$^2$ by assuming that our universe is a flat de Sitter space, which is not certainly true. In 2022, when Park and us applied Verlinde's emergent gravity to galaxy rotation curves, we discovered that a slightly smaller value of $a_M$ is preferred. We re-ran our codes and obtained that a value about 30\% smaller than Verlinde's original value of Milgrom's constant is most preferred. This agrees with the value obtained recently by applying Verlinde's emergent gravity to the general FLRW universe.
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。