<p>A new phase of matter called a “time crystal” plays with our expectations of thermodynamics. The physicist Vedika Khemani talks with Steven Strogatz about its surprising quantum behavior.</p>

<p>The post <a href="https://www.quantamagazine.org/is-perpetual-motion-possible-at-the-quantum-level-20230503/" rel="nofollow" target="_blank">Is Perpetual Motion Possible at the Quantum Level?</a> first appeared on <a href="https://api.quantamagazine.org" rel="nofollow" target="_blank">Quanta Magazine</a></p>

Are There Reasons to Believe in a Multiverse?

“The Joy of Why” is a Quanta Magazine podcast about curiosity and the pursuit of knowledge. The mathematician and author Steven Strogatz and the cosmologist and author Janna Levin take turns interviewing leading researchers about the great scientific and mathematical questions of our time. New episodes are released every other Wednesday.Quanta Magazine is a Pulitzer Prize–winning, editorially independent online publication launched and supported by the Simons Foundation to illuminate big ideas in science and math through public service journalism. Quanta’s reporters and editors focus on developments in mathematics, theoretical physics, theoretical computer science and the basic life sciences, emphasizing timely, accurate, in-depth and well-crafted articles for its broad discerning audience. In 2023, Steven Strogatz received a National Academies Eric and Wendy Schmidt Award for Excellence in Science Communications partly for his work on “The Joy of Why.”