Discrete causal approach to Quantum Gravity is a quite new subject of studies in the quantum gravity community. We discretize spacetime to points and we put a binary relation on this set. This serves me as a motivation for formulating a mathematical problem, which could be useful in the discretization problematics.
Author: johnynew
I was studying theoretical physics at the Charles university in Prague. My interest is cosmology, quantum gravity and some areas of mathematical physics.
Other my activity is playing the piano. I regularly give concerts. My favourite authors are S. Rachmaninoff, A. Scriabin, J. S. Bach, B. Martinů, J. Brahms and J. Cochran. You could find more information at www.classicalprague.cz or www.hraniprohrani.cz.
Seminar in the department of theoretical physics at the University EPV/EHU in Bilbao
Causal set approach is a promising theory of quantum gravity. It gave us already a striking discovery, which is the value of the cosmological constant.
Causal set approach to Quantum Gravity
Causal set approach to Quantum Gravity is a quite new theory developed at late 80’s and 90’s of last century. It is a discrete approach to Quantum Gravity, by contrast with string theory or loop quantum gravity. And it is the only theory so far, which gave us a plausible bound on the value of the cosmological constant! These are slides from my lecture in Nuclear Physics Institute in Řež in Czech republic.
Scalar perturbations of Galileon cosmologies in the late Universe
Galileon cosmologies are used for modelling of the late time cosmic acceleration. These are the slides from the seminar, which I held in CEICO in Czech Academy of Sciences 3.5.2018.
My contribution at the 38th Winter school of geometry and physics in Srni
Galileon gravities is one approach to modified gravities. I use it in the context of cosmology in the proof of viability of these models.
Introduction to applied functional analysis
Mathematical apparatus of Quantum Mechanics (QM) is formulated in the language of functional analysis. I made here a brief introduction to basic definitions and theorems, which are used in foundations of QM: Functional1, Functional2, Functional3, Functional4, Functional5
My preparation for the concert 29.4.2018
I reccorded yesterday my intepretation of two Scriabin’s composition’s op.11, no.1 and op.11, no.5.
Gravitational waves from Inflation
There were produced gravitational waves during the cosmological inflation epoch in the evolution of the Universe. First step for obtaining the spectrum is to do the perturbation of action, which composes from Einstein-Hilbert action and the action for scalar field.
Some of my reccordings
There are my reccordings of A.N.Scriabin, F.Chopin, T.Yoshimatzu and myself: A.Scriabin – Etude op.42, no.4; A.Scriabin – Etude op.8, no.12; A.Scriabin – Prelude op.11, no.4; A.Scriabin – Prelude op.11, no.6; A.Scriabin – Prelude op.13, no.1; F.Chopin – Etude op.25, no.1, T.Yoshimatzu – Prelude to little spring, J.N. – Landing (2011)
Concert cycle Classical Prague
We began the artistic project Classical Prague in 2015. The preparation for the serie was in Teplice, 30th March 2015. The interprets at this concert were Markéta Janoušková, Jan Novák and Andrea Vavrušová. We played in the Spa Hotel Beethoven.
The next two concerts were 17.10.2015 in evangelical church By Salvator and 1.11.2015 in church Svatý Jan na Prádle in Prague. The interprets were members of Ensemble Sporck: Lukáš Vytlačil, Lukáš Vendl, Alena Hönigová a Dora Pavlíková
Third concert was in Jan Deyl Conservatory in Prague. The artists were Adam Stráňavský, Jan Novák and Martin Kasík. It was 14.11.2015.
Fourth concert was also in Jan Deyl Conservatory 12.3.2015. The interprets were Adam Stráňavský, Jana Ivanecká, Jan Pech, Jan Novák a Pavel Voráček.
The last event was in Muzeum of Antonín Dvořák 25.6.2016. There played Pavel Voráček, Anna Rheingans and Jan Novák.
We prepare for this season 2 concerts. The first concert will be 15.10. 2017. We would like to invite You to this event.