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Quantum Universe
Cluster of ExcellenceQuantum Universe

Photo: UHH/Denstorf

Research Highlights

7 February 2025|Research Highlight

New Galactic Binaries to Enable LISA Hunt for Black Holes

Gravitational wave strain vs. frequency for detectable & verification Galactic binaries. Filled/open stars denote verification/detectable binaries for LISA (image at bottom left). Grey points are mock binaries; solid black line is LISA sensitivity at

Photo: Kupfer et al. (2024) and LISA/ESA

Compact binary systems containing a white dwarf or neutron star emit low frequency gravitational waves. Cluster of Excellence Quantum Universe...
23 January 2025|Research Highlight

Missing Piece to the Higgs Production

puzzle with different Higgs couplings printed on the pieces

Photo: CMS Collaboration: A. Cardini, S. Hurst, N. Stathak

To bring more clarity to the Higgs boson production, Quantum Universe postdoc Andrea Cardini together with doctoral researchers looked deeper into the...
6 January 2025|Research Highlight

CMS Confirms a Rare Phenomenon: Light Bouncing off Light

A graphical representation of light-by-light collisions

Photo: CMS Collaboration

Light particles bouncing off other light particles have been observed by the CMS collaboration at the LHC, confirming a rare prediction of the quantum...
19 November 2024|Research Highlight

Unveiling the Universe's 'Ghost' Matter

Filaments of the warm-hot intergalactic medium over a patch covering about 5% of the sky, which were detected by eROSITA in X-rays.

Photo: MPE/Xiaoyuan Zhang

A team of scientists using the eROSITA X-ray telescope has shed light on one of the most elusive components of the universe: the warm-hot...
5 November 2024|Research Highlight

Mystery of Supersonic Turbulence Solved

Distribution of the material on a cross-section of one of the turbulence simulations. The colours represent the density

Photo: Evan Scannapieco et al. (2024)

Which clumps of interstellar gas will collapse under gravity to form stars and which clumps will not? This is related to a key problem in turbulence...
4 November 2024|Research Highlight

Origin of the Cosmic Hum - Phase Transition or Primordial Black Holes?

A graphical representation of how gravitational waves from a cosmological phase transition or from merging black holes could have led to the signals recently observed by pulsar timing arrays

Photo: Carlo Tasillo & David Weir

New ideas for the origin of the ‘cosmic hum’ have been further developed in a couple of recent studies by Excellence Cluster Quantum Universe...
22 October 2024|Research Highlight

Detailed study of collisions with top quarks points to unknown structure

Event display of top quark colliosion

Photo: CMS Collaboration

A group of scientists from the University of Hamburg’s cluster of excellence Quantum Universe and DESY in collaboration with the University of...
24 September 2024|Research Highlight

LHC experiments observe quantum entanglement at the highest energy yet

Artist’s impression of a quantum-entangled pair of top quarks

Photo: CERN

For the first time, quantum entanglement has been observed at energies as high as 13 TeV. This remarkable result stems from top quark measurements by...
24 September 2024|Research Highlight

Another Step towards a Storage Ring-based Gravitational Wave Observatory

Comparison of the signal strength of space time stretching caused by the inspiral, ringdown and merging phases of super-massive binary black holes (SMBBH) or extreme mass-ratio inspirals (EMRI) and time-of-flight noise of uranium ions and diuraniom m

Photo: Schmirander, T. et al. (2024)

In a unique collaboration of the Hamburg Observatory and the Institute of Experimental Physics of the University of Hamburg, which was fostered by the...
20 September 2024|Research Highlight

First Limits on Axion Dark Matter from MADMAX

The axion dark matter search result (orange filled region) from the MADMAX prototype. The axion-photon coupling (in inverse giga-electron-Volts ) is on the vertical axis and axion dark matter mass (in micro-electron-volts) is on the horizontal axis.

Photo: Ary dos Santos Garcia, B., et al. (MADMAX Collaboration (2024)

For its first time, the MADMAX (Magnetized Disc and Mirror Axion eXperiment) collaboration has set limits on axion dark matter with its prototype...
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Cluster of Excellence
Quantum Universe

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