This sticky is for announcements of pertinent scientific events, such as conferences, seminars, or public talks. This...

Apr1214 02:54 PM
marcus

59 
45,672 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Jul1412 08:32 AM
ZapperZ

1 
22,209 
Found this on Woit's:
http://www.arxiv.org/abs/hepth/0507171
Authors: S. W. Hawking
Reportno: DAMTP200566...

Jul3105 08:49 AM
alias25

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1,965 
Has anybody done something in the field, "Computer simulation of Polymer(organic) solar cells".
I need facts to...

May709 01:54 AM
Gihan sky

0 
1,964 
Haelfix pointed out the paper "Quantum Topologically Massive Gravity in de Sitter Space", which calculates a partition...

Jun311 07:33 PM
mitchell porter

2 
1,964 
In Wilczek nobel acceptance talk
http://arxiv.org/hepph/0502113
on page 21
right under equation (2)
the...

Feb1705 03:50 PM
marcus

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1,962 
From http://www.physics.utoronto.ca/%7Ecolloq/...

May2807 07:52 PM
marcus

1 
1,962 
In string theory, a solution involving flat 10D space seems like a valid solution. The Universe could be described by...

Jan2610 04:35 PM
arivero

2 
1,962 
i know that gravitons supposedley "transfers" gravity between two particles, but can anyone tell me how gravitons...

May1105 03:48 PM
selfAdjoint

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Is there any theory for which "elementary" particles are "small" black holes or/and for which the electron and the...

Feb2512 03:13 AM
Blackforest

9 
1,960 
In ordinary GR geometry, the Higgs field cannot play the rôle of the inflaton, so to imagine inflation one has to...

Mar1509 02:56 AM
cristo

8 
1,959 
Peter May and I are about to run a workshop on ncategories at the Institute for Mathematics and its Applications:
...

Jun3004 02:38 AM
rick1138

10 
1,958 
I came across a curious site on this topic:...

Mar1711 09:15 AM
Physics Monkey

3 
1,958 
Another silly question here :)
What are some of the cosmological observations a TOE must agree with? (I'm making a...

Jun2411 08:40 AM
qsa

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1,958 
This is an interesting hypothesis that doesn't seem to have been discussed yet. What are its flaws?
Mark Hadley at...

Jul1711 06:04 PM
apeiron

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1,958 
several recent papers have cited
Ashtekar and Lewandowski
"Background Independent quantum gravity: a status report"...

Mar304 12:17 AM
marcus

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1,956 
First question:
Since a neutral Higgs boson is its own antiparticle, and has zero spin, it appears to have zero for...

Sep1808 01:19 PM
masudr

7 
1,956 
Hi,
I have no knowledge of ST but have a probably simple question.
I saw a program about how the extra dimensions of...

Mar2310 05:57 PM
tom.stoer

7 
1,956 
This is a proposal for a quantum theory of gravity and matter in which all physical parameters are determined and...

Nov410 05:24 AM
czes

2 
1,956 
ok so in the cyclic model of the universe...two branes are colliding and this is causing big bangs every few trillion...

Dec2110 05:03 AM
torquil

1 
1,956 
Hello,
i am given an action (only scalars) and i want to make it supersymmetric. Any hints?
Do i simply add...

Oct1711 01:58 AM
yola

5 
1,955 
Geometric Models: E8, SO(10),
Which ansatzs will prove to be right by CERN?
1. Ali H. Chamseddine and Alain Connes ,...

Dec707 10:41 AM
MTd2

5 
1,955 
This is my first post and I’ve got some questions in regards to our universe.
From what I’ve been reading it is known...

Jan2504 06:29 PM
marcus

28 
1,954 
Hi Experts,
I have passed my MSc. Physics in 2000 from Punjab University Lahore
Pakistan & working in Industrial...

Jan2906 06:31 AM
Nasir Ali

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1,954 
http://sciencewatch.com/dr/erf/maps/08decerfBaggETRFM/#156486489
This is an interesting development in String/M,...

Jan2309 12:48 AM
marcus

1 
1,954 
As far as I know there is no firm prediction of any Lorentz bending derived from mainstream Loop.
The authorities on...

Aug2409 11:11 PM
marcus

16 
1,954 
This may seem like a naive question to some people.
I had always heard that Lqg can easily incorporate...

Sep311 02:53 AM
tom.stoer

3 
1,953 
New paper out today about supersymmetry in spin foam QG
Spin foam is the leading nonstring approach to quantum...

Oct2007 02:05 AM
josh1

5 
1,951 
We have had some discussion of this in earlier threads.
Alain Connes et al have been able to derive the standard menu...

Feb1808 08:58 PM
marcus

2 
1,951 
Carlip has argued that the dimensional reduction in many apprroaches to quantum gravity is related to the BKL limit...

Apr512 05:00 PM
marcus

2 
1,951 
How do we describe vibrating strinGs and branes?
Is this connected with vibration of circular or quadratic membrane...

Jul111 08:54 AM
bapowell

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1,950 
I read in Elegant Universe there is a 5th force predicted by the string theory. Anybody know what it is ?

Apr1905 05:25 PM
DaveC426913

3 
1,948 
I have a few questions about something I read in the transcript of Stephen Hawking's talk at GR17. He says that it has...

Aug2704 11:43 AM
humanino

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1,947 
My question is simple and straight forward  how does a 1dimensional string "convert" to a zerodimensional point...

Jan1209 04:36 PM
derek.basler

3 
1,947 
How does LQG work? I know there are gravitons in it but how do they interact with spacetime?
Why is it a theory of...

May210 11:51 PM
tom.stoer

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1,947 
As I understand it, the spin of anything is with respect to the background spacetime. So I have to wonder if the spin...

Sep1812 11:51 PM
tom.stoer

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1,947 
I watched the first half of the TV series a few months ago, and watched the rest just last night. I also asked for the...

Jan405 10:53 AM
beeper

5 
1,946 
I have absolutely no idea how to do this, but tell me if it will theoretically work:
Somehow 'slice' the membrane...

Jan808 03:10 PM
Toastus

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1,946 
I have been recently reading a lot on Super Strings and MTheory, and I discussed this with selfAdjoint earlier but he...

Apr1704 02:17 PM
Javier

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1,945 
So the Hamiltonian of the wavefunction of the universe is equivalent to zero. Am I correct in interpreting this as a...

Aug2909 09:49 AM
Finbar

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1,945 
Are there any news regarding twistor theory?
The original ideas by Penrose to replace spacetime by its "dual...

May2711 06:29 PM
qsa

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Is somebody here involved with the causal set approach to QG?
http://arxiv.org/abs/grqc/0309009 is a nice...

Sep2709 09:56 AM
Carey

3 
1,944 