Recent content by IRobot

Hi, I am currently looking for PhD in the areas of quantum computing or condensed matter theory but maybe not with a conventional background for those fields. I have a master degree in theoretical physics (with lectures oriented in high energy theory, QFT, CFT, QCD, the Standard Model and...

Well, in my case there is no p-layer behind the i region, the piece is really engineered like that. Or at least it is presented like that in the article based on this device. At the moment, I am really inclined to look at the i region as a p region feebly doped in comparison to the n one, and in...

Hi, I am interested in a junction between n doped and intrinsic GaAs, specifically the localization and width of the depletion zone (where the built-in E field is). In a p-n junction the depletion zone is calculated under the condition of electro-neutrality, if I see i-GaAs as really really low...

I have been refreshing my concepts of statistical physics by reading Tong's lecture notes weeks ago: http://www.damtp.cam.ac.uk/user/tong/statphys.html I really enjoyed them, and learned some new stuff.

Hi, I am a graduate student with a background more oriented in high energy physics and cosmology but switching to light and matter interaction, more specifically cavity QED and quantum optics. I need to have a working knowledge on those topics, being able to read state of the art articles and...

Hi, I am a student in theoretical/fundamental physics that finished his masters couple of weeks ago. I'm still looking for a PhD starting asap. I am quite interested in an opened position at a UK top 10-15 university, the project seems interesting enough to invest 3 years in it. But I have...

I'd say the wikipedia page on decoherence should work this out for you. If not, decoherence is a technical subject, if you want to grasp it you need a couple of equations (not that sophisticated) and I would advise you http://arxiv.org/abs/quant-ph/0306072/ and...

Well, I would call loss of unitarity any loss of unitarity, but as I heard of using non-linearities to describe wave-function collapse, and the breakdown of a superposition is non unitary evolution, I'd say maybe =)

Hi, I several times heard that one way to describe the collapse of the wave-function is to add non linearities in the Schrodinger equation (I know that this approaches are not convincing but that's not my point), however, I don't see why a non linear SE would imply loss of unitarity? As long...

Hi, I just finished my master in theoretical physics with a strong interest in quantum mechanics and relativity. I always picked the courses that where more or less related to that: qft, cft, gr, critical phenomenas, particle physics, qcd, electroweak, statistical physics, susy. But now, I'd...

Thanks for the first reference, clear and neat description of the motives behind inflation and eternal inflation ;) For the second reference, I may try to find the book at my university's library.

Hi, I currently have to learn about the topic of eternal inflation, at a basic level for now, I am already familiar with the topic of inflation. I don't know what are the good references to this subject. I will try to start in Weinberg's book of cosmology (the one published in 2008), but is...

Hi, I'll be starting next week a 6 months internship, and I'll be working on quantum cosmology, roughly. I have been studying physics for 5 years now, and mostly interested in theoretical things for 4 years (from my first lectures of electromagnetism to conformal field theory), but...

Thanks just read it, but still pretty useful. So far I was using David Tong's notes on CFT from his String Theory Lecture and Polchinsky's book.

@f95toli: Ok thanks for this really clear picture about the working of this system. I still have one question: is there a easy way to know about whose teachers got the funding and what subjects are they proposing? @BruceW: I PMed you about my background studies ;).