• Research News

    Mysteriously Mundane Turbulence Revealed in 2D Superfluid

    Despite existing everywhere, the quantum world is a foreign place where many of the rules of daily life don’t apply. Quantum objects jump through solid walls; quantum entanglement connects the fates of particles no matter how far they are separated; and quantum objects may Read More
  • Research News

    A New Piece in the Matter–Antimatter Puzzle

    aOn March 24, 2025 at the annual Rencontres de Moriond conference taking place in La Thuile, Italy, the LHCb collaboration at CERN reported a new milestone in our understanding of the subtle yet profound differences between matter and antimatter. In its analysis of large Read More
  • Research News

    Researchers Play a Microscopic Game of Darts with Melted Gold

    Sometimes, what seems like a fantastical or improbable chain of events is just another day at the office for a physicist. In a recent experiment by University of Maryland researchers at the Laboratory for Physical Sciences, a scene played out that would be right Read More
  • Research News

    IceCube Search for Extremely High-energy Neutrinos Contributes to Understanding of Cosmic Rays

    Neutrinos are chargeless, weakly interacting particles that are able to travel undeflected through the cosmos. The IceCube Neutrino Observatory at the South Pole searches for the sources of these astrophysical neutrinos in order to understand the origin of high-energy particles called cosmic rays and, Read More
  • Research News

    Twisted Light Gives Electrons a Spinning Kick

    It’s hard to tell when you’re catching some rays at the beach, but light packs a punch. Not only does a beam of light carry energy, it can also carry momentum. This includes linear momentum, which is what makes a speeding train hard to Read More
  • Research News

    Repurposing Qubit Tech to Explore Exotic Superconductivity

    Decades of quantum research are now being transformed into practical technologies, including the superconducting circuits that are being used in physics research and built into small quantum computers by companies like IBM and Google. The established knowledge and technical infrastructure are allowing researchers to harness quantum technologies in Read More
  • Research News

    New Design Packs Two Qubits into One Superconducting Junction

    Quantum computers are potentially revolutionary devices and the basis of a growing industry. However, their technology isn’t standardized yet, and researchers are still studying the physics behind the diverse ways to build these quantum devices. Even the most basic building blocks of a quantum Read More
  • Research News

    HAWC Finds High-Energy Gamma-Ray Emissions from Microquasar V4641 Sagittarii

    A new study in Nature, “Ultra-high-energy gamma-ray bubble around microquasar V4641 Sgr,"   has  revealed a groundbreaking discovery by researchers from the High Altitude Water Cherenkov (HAWC) observatory:  TeV gamma-ray emissions from V4641 Sagittarii (V4641 Sgr), a binary system composed of a black hole and a main sequence Read More
  • Research News

    Nobel Prize Celebrates Interplay of Physics and AI

    On October 8, the Nobel Prize in physics was awarded to John Hopfield and Geoffrey E. Hinton for their foundational discoveries and inventions that have enabled artificial neural networks to be used for machine learning—a widely used form of AI. The award highlights how Read More
  • 1 Mysteriously Mundane Turbulence Revealed in 2D Superfluid
  • 2 A New Piece in the Matter–Antimatter Puzzle
  • 3 Researchers Play a Microscopic Game of Darts with Melted Gold
  • 4 IceCube Search for Extremely High-energy Neutrinos Contributes to Understanding of Cosmic Rays
  • 5 Twisted Light Gives Electrons a Spinning Kick
  • 6 Repurposing Qubit Tech to Explore Exotic Superconductivity
  • 7 New Design Packs Two Qubits into One Superconducting Junction
  • 8 HAWC Finds High-Energy Gamma-Ray Emissions from Microquasar V4641 Sagittarii
  • 9 Nobel Prize Celebrates Interplay of Physics and AI

Physics is Phun

Department News

  • World Quantum Day "Capital of Quantum" illustration by Valerie Morgan Happy Quantum Day! If that’s a salutation you’re unfamiliar with, this might not be the last time you encounter it. Celebrated every April 14, World Quantum Day seeks to boost understanding and appreciation of quantum science and technology. Read More
  • Breakthrough Prize Awarded to CERN Experiments On April 5, 2025, the CMS, LHCb, ALICE and ATLAS collaborations at the Large Hadron Collider at CERN were honored with the Breakthrough Prize in Fundamental Physics by the Breakthrough Prize Foundation. The prize is awarded to the four collaborations, which unite thousands of researchers from more than 70 countries, and concerns Read More
  • Moille Awarded Distinguished Research Scientist Prize Associate Research Scientist Grégory Moille has received the Distinguished Research Scientist Prize from the College of Computer, Mathematical and Natural Sciences at the University of Maryland. The award comes with a $5,000 prize and celebrates his research excellence.  “I'm deeply honored and grateful for this recognition,” Read More
  • Sclafani Cited for Dissertation Work Post-doctoral Associate Stephen Sclafani has been selected for the American Physical Society’s Ceclia Payne-Gaposchkin Doctoral Dissertation Award, which recognizes doctoral thesis research in astrophysics and encourages effective written and oral presentation of research results.    Sclafani was cited for performing the first observation of diffuse high-energy neutrinos from Read More
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Upcoming Events

29 Apr
Gravitation Theory Seminar - Daniel Harlow, MIT
Date Tue, Apr 29, 2025 11:00 am - 12:00 pm
29 Apr
Physics Colloquium - Misner Lecture
Tue, Apr 29, 2025 4:00 pm - 6:00 pm
30 Apr
RIT in Quantum Information Science
Wed, Apr 30, 2025 1:00 pm - 1:50 pm
1 May
NT Seminar - Agnieszka Sorensen, Michigan State
Thu, May 1, 2025 2:00 pm - 3:00 pm
1 May
QMC Colloquium: Ruijuan Xu, North Carolina State
Thu, May 1, 2025 2:00 pm - 3:30 pm
1 May
Geometry and Physics RIT
Thu, May 1, 2025 3:30 pm - 4:30 pm
2 May
Friday Quantum Seminar: Ben Eller
Fri, May 2, 2025 12:00 pm - 1:00 pm
2 May
QuICS Special Seminar: Pradeep Niroula
Fri, May 2, 2025 1:00 pm - 2:00 pm
5 May
JQI Seminar - Michael Knap
Mon, May 5, 2025 11:00 am - 12:00 pm

The Challenge of Sustainability: Lessons from an Evolutionary Perspective

Simon Asher Levin, Princeton University & Center for Applied Mathematics Cornell University
December 08, 2009

The continual increase in the human population, magnified by increasing per capita demands on Earth’s limited resources, raise the urgent mandate of understanding the degree to which these patterns are sustainable. The scientific challenges posed by this simply stated goal are enormous, and cross disciplines. What measures of human welfare should be at the core of definitions of sustainability, and how do we discount the future and deal with problems of intra-generational and inter-generational equality? How do environmental and socioeconomic systems become organized as complex adaptive systems, and what are the implications for dealing with public goods at scales from the local to the global? How does the increasing interconnectedness of coupled natural and human systems affect the robustness of aspects of importance to us, and what are the implications for management, what is the role of social norms, and how do we achieve cooperation at the global level? All these issues have parallels in evolutionary biology, and this lecture will explore what lessons can be learned from ecology and evolutionary theory for addressing the problems posed by achieving a sustainable future.

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Colloquia are held Tuesdays in Room 1410 at 4:00 pm (preceded by light refreshments at 3:30). If you have additional questions, please call 301-405-5946.

Dark Matter in the Universe

Katherine Freese, University of Michigan
November 17, 2009

Only 4% of the Universe is made of the ordinary atomic matter that constitutes the objects in our daily experience as well as ourselves. The majority of the Universe resides in the Dark Side: Dark Matter and Dark Energy. This talk will examine the dark matter that comprises 95% of the mass of the Milky Way and all other galaxies. I will begin by reviewing the observational evidence for dark matter including rotation curves of galaxies. Then, I will discuss proposed candidates for the dark matter, which is probably made of some new kind of fundamental particle. The best motivated dark matter particles are Weakly Interacting Massive Particles, or WIMPs, such as supersymmetric particles or particles from extra dimensions. A great deal of excitement currently pervades this field because of current and upcoming experiments that can find the dark matter, via both direct and indirect techniques. We first made these predictions twenty years ago, and it is very exciting that more and more unexplained signals are emerging that may in fact be signatures of dark matter detection. These particles have been powerful motivation for the LHC at CERN, the underground experiments such as XENON, satellites such as FERMI or PAMELA, and neutrino detectors such as ICECUBE at the South Pole. The current status will be discussed. In the remainder of the talk, I will also discuss Dark Stars: the first stars to form in the universe may be powered by WIMP dark matter heating rather than by fusion (a new phase of stellar evolution) and may be detectable as well..

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Colloquia are held Tuesdays in Room 1410 at 4:00 pm (preceded by light refreshments at 3:30). If you have additional questions, please call 301-405-5946.

Modeling the Dynamics and Gravitational-Wave Emission of Coalescing Binary Black Holes

Alessandra Buonanno, University of Maryland
November 03, 2009

In general relativity, spacetime is a dynamic and elastic entity both influencing and influenced by the distribution of mass and energy that it contains. Solving the two-body problem in general relativity is therefore much more challenging than in Newtonian gravity.  Recent developments at the interface between analytical and numerical relativity have deepened our understanding of the two-body problem in general relativity, revealing an intriguing simplicity. I will review those advances, focusing on the most dynamical and non-linear phase of the coalescence of binary black holes -- that is, when the two black holes end their long inspiral with a plunge, merge with each other, and leave behind a “ringing” black hole. I will also discuss the implications of the advances for the search for gravitational waves -- especially with respect to building analytical templates of black hole coalescences, and, in astrophysics, to calculating the distribution of recoil velocities.

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Colloquia are held Tuesdays in Room 1410 at 4:00 pm (preceded by light refreshments at 3:30). If you have additional questions, please call 301-405-5946.

Leonardo's Model

Bulent Atalay, University of Mary Washington
December 01, 2009

Leonardo was a part-time artist, a passionate scientist, and a consummate inventor, whose interests were frequently inseparable. Physicist-artist Bulent Atalay invokes ‘Leonardo’s Model,’ in order to achieve the larger goal of achieving a synthesis of the two fields by presenting science through art, and art through science

Part I. “The Artist Doing Science” Described by legendary art historian Lord Kenneth Clark as the “most relentlessly curious man in history,” Leonardo constantly sought patterns, symmetries and connections in all of his studies. His astonishingly sharp observational skills led him not to prefigure sciences not to be formally invented for centuries. With unmatched drafting skills, he illustrated his ideas that reveal him to be one of the greatest scientists ever. Leonardo was in the business of inventing the future, but, since he was not publishing his discoveries, was not influencing the future.

Part II. “The Scientist Doing Art.” An extraordinary level of reciprocity exists between Leonardo the artist and Leonardo the scientist-engineer. The qualities of timelessness and universality in his miraculous works speak eloquently for themselves. He created the two most famous works in the history of art. With ‘Leonardo's Model’ providing the unifying thread, however, it becomes possible, first, to glimpse his restless intellect, that extraordinary psyche; second, to see whence the ideas for his works of art came; and ultimately to appreciate his art at a different level.

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Colloquia are held Tuesdays in Room 1410 at 4:00 pm (preceded by light refreshments at 3:30). If you have additional questions, please call 301-405-5946.

Statistical Physics Meets Neurobiology: Is Your Brain Wired Optimally?

Dmitri Chklovskii, Howard Hughes Medical Institute
November 10, 2009

The human brain is a network containing a hundred billion neurons, each communicating with several thousand others. As the wiring for neuronal communication draws on limited space and energy resources, evolution had to optimize their use. This principle of minimizing wiring costs explains many features of brain architecture, including placement and shape of many neurons. However, the shape of some neurons and their synaptic properties remained unexplained. This led us to the principle of maximization of brain's ability to store information, which can be expressed as maximization of entropy. Combination of the two principles, analogous to the minimization of free energy in statistical physics, provides a systematic view of brain architecture, necessary to explain brain function.

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Colloquia are held Tuesdays in Room 1410 at 4:00 pm (preceded by light refreshments at 3:30).  If you have additional questions, please call 301-405-5946.