Press releases
Squeeze and you shall measure – squeezed coherent states shown to be optimal for gravitational wave detection
2013-11-13
Extremely precise measurements of distances are key in all techniques used to detect gravitational waves. To increase this precision, physicists have started using quantum effects linked with photons. A paper published in "Physical Review A" by Polish and German physicists shows that it is not necessary to use quantum light states more refined than the squeezed coherent states available currently.
Quantum Reality More Complex Than Previously Thought
2013-10-28
Imagine you order a delivery of several glass vases in different colors. Each vase is sent as a separate parcel. What would you think of the courier if the parcels arrive apparently undamaged, yet when you open them, it turns out that all the red vases are intact and all the green ones are smashed to pieces? Physicists from the University of Warsaw and the Gdańsk University of Technology have demonstrated that when quantum information is transmitted, nature can be as whimsical as this crazy delivery man.
GR20/Amaldi10: A time of great discoveries in understanding gravity is fast approaching
2013-07-15
The secrets of the mysterious force of gravity should soon be coming unravelled. The results of work by scientists all over the world, presented during the grand GR20/Amaldi10 gravitational conference in Warsaw, indicate that a major turning-point is close on the horizon.
Stellar monsters do not collide – no hope for a spectacular catastrophe
2013-07-11
One might expect that collisions between the remains of monstrous stars, with masses reaching 200-300 times that of our Sun, would be among the most spectacular phenomena in the Universe. Perhaps they are, but we will unfortunately probably never have the chance to find out. Astrophysicists from the Astronomical Observatory of the University of Warsaw have discovered that the first such collisions will not occur until billions of years from now.
GR20/Amaldi10: Space-time is not the same for everyone
2013-07-09
Before the Big Bang, space-time as we know it did not exist. So how was it born? The process of creating normal space-time from an earlier state dominated by quantum gravity has been studied for years by theorists at the Faculty of Physics, University of Warsaw. Recent analyses suggest a surprising conclusion: not all elementary particles are subject to the same space-time.
GR20/Amaldi10: Warsaw – World Capital of Research on Gravity
2013-07-08
Studying the nature of gravity is one of the broadest and most intellectually sophisticated fields of modern science. Starting today, physicists from all over the world will begin to discuss the results of their research during a special event: the Warsaw GR20/Amaldi10 Gravitational Conference. The lectures and presentations related to the conference will be attended by nearly 900 scientists.
Prof. Jan Dereziński published a book on mathematical methods of quantum theory in Cambridge University Press
2013-03-04
The book "Mathematics of Quantization and Quantum Fields" of prof. Jan Dereziński from the Faculty of Physics, University of Warsaw and prof. Christian Gérard from Université Paris-Sud has just been published in Cambridge University Press in the series Cambridge Monographs on Mathematical Physics. Unifying a range of topics that are currently scattered throughout the literature, this book offers a unique and definitive review of mathematical aspects of quantization and quantum field theory.
The Mysterious Mass Gap Sheds Light on Supernova Explosions
2013-02-27
For over 10 years astronomers have been trying to understand the dearth of neutron stars and black holes in mass range 2-5 solar masses. This striking"mass gap", as lighter neutron stars and heavier black holes do exist, poseda challenge for theorists and observers alike.
Scientists from Astronomical Observatory, Faculty of Physics at Warsaw University in collaboration with American researchers have solved the puzzle and provided new insights into inner workings of supernova explosions.
The European Physical Society gives special recognition to physics at 69 Hoża Street
2013-01-10
In autumn 2011 the building of the Faculty of Physics of the University of Warsaw at 69 Hoża Street, a key location in the history and development of physics in Poland, became first EPS Historic Site. On 10 January 2013 a plaque commemorating that remarkable fact was unveiled, during a ceremony attended by the President of the European Physical Society.
"Quantum rulers" offer greater precision… and now we know how much greater
2012-09-20
The scientists from the Faculty of Physics, University of Warsaw, and the University of Nottingham, have developed theoretical tools making it possible to establish the limits of the precision actually attainable using entangled states under realistic experimental conditions. This has enabled current experimental achievements in the field of precision measurements to be compared, for the first time, against the fundamental limitations of quantum mechanics.