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cover of episode Cosmic Queries – Dimensional Leaking

Cosmic Queries – Dimensional Leaking

2025/6/13
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Charles Liu
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Neil deGrasse Tyson
以主持《宇宙：时空之旅》和《星谈》等科学节目而闻名的美国天体物理学家和科学传播者。
Topics
Neil deGrasse Tyson: 我认为重要的是要理解引力是否真的是一种力，或者它是否仅仅是时空对质量的反应。我们是否应该像对待其他基本力一样对待引力？ Charles Liu: 从广义相对论的角度来看，引力实际上是时空的一种曲率，而不是传统意义上的力。在小尺度下，例如在地球或太阳系中，我们无法区分加速度和时空曲率。然而，在极端环境下，例如黑洞或宇宙的开端，这种差异变得至关重要。标准模型中缺少传递引力的粒子（引力子），这使得引力成为一个特殊的边界条件。尽管我们尚未直接探测到引力子，但引力波的发现暗示了它的存在。此外，暗物质可能与另一个宇宙的引力泄漏有关，这为我们理解宇宙的结构提供了新的视角。

Deep Dive

Chapters
This chapter explores the nature of gravity, questioning whether it's a force or a curvature of space-time. The discussion involves general relativity, quantum theory, and the hypothetical graviton particle. The possibility of parallel universes influencing our space-time is also considered.
  • General relativity describes gravity as a curvature of space-time, differing from Newton's theory on small scales.
  • Quantum theory suggests the existence of a graviton particle mediating gravity.
  • The interaction between general relativity and quantum mechanics remains a frontier of research.

Shownotes Transcript

Is the whole universe actually a jinn particle? Neil deGrasse Tyson and cohosts Chuck Nice and Gary O’Reilly hang out with astrophysicist Charles Liu to answer questions about the nature of gravity, dark matter, and why we don’t actually know how the solar corona gets hot. 

NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/cosmic-queries-dimensional-leaking/

Thanks to our Patrons Abhijeet Garg, Barry Cunningham, Chris Gunter, Roger Inglis, Michael Hines, Frank Lewis, Will Edwards, Robert Tomsons, Nancy Stone, Michael Belshe, Barbara Neil, Steve Smith, Catherine THomson, Janet Watkins, AMit Yadav, Leslie, Nat Woods, Gilberto Rodriguez, Tobraham, Kwabena Slaughter, Eric Jordan, Anna Shilonosova, Corey PRator, Duncan, Gabe Mallek, peter jonkers, TED PHILIPPE, ElectroHawk, Ben, Tyla Moss, Briehanna, fenrir yggdrasil, JP Campion, Roberto, Mark Lytle, Aouregan, Markybob, Emil Helfer, Andrew Keigan Duckett, None, STANLEY A HARMON, Laura Godfrey, Christopher Sanchez, Helen Gyselhart, Eric, Chase Mathews, Edward Kramer, Jonathan Fitzgerald-Bord, Tyler Lindsey, Michael Butler, and David Kingbeil for supporting us this week.

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