Ingemar Bengtsson
My name is Ingemar Bengtsson, and I have
been a lecturer at Fysikum in Stockholm since '93 (and a professor since
'00). My previous "career" was at Chalmers, CERN and Imperial College.
This is me (as drawn by Jörgen Hansson in
'73)
The
research areas that I like the best usually have something to do with geometry.
General relativity is a favourite. Most of my work there is on black holes. My
strongest prejudice is that the world has four dimensions; this is the
direction in which I look for clues about quantum gravity. Then I work on
quantum information theory, since the geometry of the space of quantum states
is wonderful and rather mysterious. What I find fascinating about relativity
and quantum mechanics---as it happens, the two deepest theories we have---is
that their basic equations have been around for a century, and yet
they keep springing conceptual surprises on us. I am looking for the next
surprise there, but I do keep a weather eye open on other subjects as well.
There are two things on my mind at the moment: An unexpected connection between
quantum mechanics and the deeper recesses of number theory, and the localisation of
energy in relativity.
I am told that some scientists think that there is something queer going on in
the Universe while others, on the whole, don't. I tend towards the former
viewpoint, but this is probably not apparent from my published papers. Some
examples of those are:
Well, it goes on. I wrote my
best paper last year. Of course,
not all my papers are published.
If any youngster wants to see what a
"preprint" used to look like, here is one:
With Karol Zyczkowski from Krakow
I have written a book on quantum mechanics, seen through our eyes. The Cambridge University Press published the second
edition in 2017:
I occasionally try to write popular
science articles. They are all in Swedish:
If you want to hear me trying to explain gravity (på svenska), you can do it from home.
In the department I am a member of the "KOMKO" group, which includes the
(informal) Relativity group (it has
a little homepage of its own) and the group for Quantum Information and Quantum Optics.
My views on teaching happen to be identical to those of Fred Hoyle, as
expressed in " The Universe: Past and present reflections
" (Ann. Rev. Astr. Astrophys. 1982), so there is no need to repeat them here.
This academic year I taught Electrodynamics and Introduction to Quantum
Information and Quantum Computing.
·
Elektrodynamik I. The book for the course is no less than that of J. D. Jackson,
3d ed. For the details see the course homepage
.
· Kvantinformation och kvantdatorer. For more information see
the course homepage
.
The coming academic year I will teach Electrodynamics again. It is, after all, the best subject.
I enjoy
supervising Master's Theses and such things. I have made a little collection of all theses
that I saved the pdf files for on a special
thesis page.
Examples of lecture notes:
My present graduate student is Ole Sönnerborn.
My Erdös number is 3. My Einstein number is 4. My Bohr number is 3.
And one more thing. A quote from James Lovelock, which I
have had occasion to think about, quite some time ago actually:
"Of all the prizes that come from surviving more than fifty years, the
best is the freedom to be eccentric."
Many years later in Meknes. Photograph by Adan Cabello.
Email:
ibeng@fysik.su.se
Test for Vlad
homepage