Upcoming events

21
November
Nonequilibrium almoststationary states and linear response for gapped quantum systems
Dátum:2018. November 21. 14:15
Elméleti Fizika szemináriumsorozat
Professor Stefan Teufel (Tübingen): Nonequilibrium almoststationary states and linear response for gapped quantum systems
in: Novobátzkyroom (Északi Tömb, 2.54)
I report on recent mathematical results concerning the validity of linear response theory at zero temperature for perturbations of gapped Hamiltonians describing interacting fermions on a lattice, e.g. quantum Hall systems. The challenge here is to prove Kubo's formula uniformly in the volume and also for perturbations (like a small constant electric field) that close the spectral gap. Our justification of linear response theory is based on a novel extension of the adiabatic theorem to situations where a timedependent perturbation closes the gap. According to the standard version of the adiabatic theorem, when the perturbation is switched on adiabatically and as long as the gap does not close, the initial ground state evolves into the ground state of the perturbed operator. The new adiabatic theorem states that for perturbations that are either slowly varying potentials or small quasilocal operators, once the perturbation closes the gap, the adiabatic evolution follows nonequilibrium almoststationary states (NEASS) that we construct explicitly. 
7
November
Precision theory for hydrogen molecular ions
Dátum:2018. November 7. 14:15
Professor Vladimir Korobov (Dubna): Precision theory for hydrogen molecular ions
in: Novobátzky room (Északi Tömb, 2.54)
At present theoretical prediction for the spinaveraged frequency of rovibrational transitions in the hydrogen molecular ions (HMI) has reached a relative precision of ~ 7.5 x 10^(12). On the other hand, recent experiment on pure rotational transition in HD+ has demonstrated the power of the LambDicke regime for precision spectroscopy of the HMI with strong potentiality in the nearest future to achieve a ppt level of spectroscopic accuracy. The Rydberg constant as it is determined in the CODATA14 adjustment of the fundamental constants has the relative uncertainty 5.9 x 10^(12). At the same time the two new experiments on spectroscopy of hydrogen atom performed at LKB, Paris, and MPQ, Munich, disagree in measuring the Rydberg constant by more than 3sigma! In our presentation we want to outline the way how the high precision results for the hydrogen molecular ions may be achieved with the help of the effective field theory  the Nonrelativistic QED. At the very end of our talk we intend to discuss the problems, which are to be solved in order to improve (at least threefold) theoretical predictions. That will bring our theory to the level of accuracy which is better than for the present CODATA14 value of the Rydberg constant. And, we hope, that this will help to resolve the discrepancy between the LKB and MPQ experiments as well as to find answers to many other questions related to the fundamental constants. 
27
Szeptember
Intézeti szeminárium:Vapour Nucleation on Nanoparticles: Influence of Contact Angle and Line Tension
Dátum:2018. Szeptember 27. 15:30
Előadó: prof. Paul Wagner (University of Wien)

12
Szeptember
ADVANCES IN AEROSOL SCIENCE: from birth of particles to climate modifications
Dátum:2017. Szeptember 12. 14:30
Az Eötvös Loránd Tudományegyetem Természettudományi Kar Kémiai Intézet, az MTA Környezeti Kémiai Munkabizottság és az MKE Magyar Aeroszol Társaság
tisztelettel meghívja
ADVANCES IN AEROSOL SCIENCE: from birth of particles to climate modifications
című tudományos ülésére
angol nyelven
az ELTE Természettudományi Kar kari tanácstermébe (Budapest, Pázmány stny. 1/A, Északi Tömb, 7. emelet 7.21) 2017. szeptember 12én, kedden.
Chairman: Tamás Turányi, director, Institute of Chemistry, ELTE
14:30 – 14:40 Opening remarks Péter Surján, dean, Faculty of Science, ELTE
14:40 – 15:25 Secondary particle formation: from molecular clustering to global climate and air quality Markku Kulmala, University of Helsinki
15:25 – 15:55 New particle formation in the global atmosphere: current view based on observations VeliMatti Kerminen, University of Helsinki
15:55 – 16:10 Atmospheric new particle formation and its consequences in Budapest Imre Salma, head, Budapest platform for Aerosol Research and Training, ELTE
16:10 – 16:25 Changes in atmospheric environmental conditions in Hungary during the past decades László Bozó, president, Section of Earth Sciences, MTA
16:25 – 16:35 Closing remarks Attila Császár, head, Chemistry Doctoral School, ELTE

16
Február
Alkímia ma Lecture Series (in hungarian)
Dátum:2016. Február 16. 17:00
Hudecz Ferenc (Professor, Institute of Chemistry, ELU, Organic Chemistry Depatment): Mesterséges antigének, szintetikus vakcinák