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Jul1412 08:32 AM
ZapperZ

1 
22,319 
This sticky is for announcements of pertinent scientific events, such as conferences, seminars, or public talks. This...

Apr1214 02:54 PM
marcus

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46,101 
http://arxiv.org/abs/1307.5238
Anomalyfree perturbations with inversevolume and holonomy corrections in Loop...

Aug313 03:03 PM
marcus

1 
810 
I recently read the blog of Philip Gibbs, it seems to have some interesting arguments.
...

Aug713 02:45 PM
Harry Wilson

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1,311 
http://arxiv.org/abs/1305.6315
Why gravity codes the renormalization of conformal field theories
Henrique Gomes,...

Aug813 10:02 AM
marcus

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2,003 
Robert Oeckl proposed this new formulation of QT in December of last year. http://arxiv.org/abs/1212.5571 I think it's...

Aug913 12:37 PM
marcus

0 
748 
So I watching this video on dimensions..
and I have a few questions:
1. How many dimensions are there? (that are...

Aug1113 09:00 AM
Jheavner724

30 
3,105 
I am toward the end of reading Smolin's Time Reborn for the second time, and it occurred to me that there was a...

Aug1213 11:47 PM
wmikewells

2 
966 
For N=1 SUSY, the SUSY algebra is closed as long as Bianchi identity \epsilon^{\mu\nu\rho\sigma}D_\nu...

Aug1513 02:44 PM
fzero

4 
1,084 
In his review talk at loops 13 entitled "Loop Quantum Cosmology: A Eulogy" Martin Bojowald has declared that loop...

Aug2113 02:14 AM
mitchell porter

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4,836 
As I understand, complementarity approach claims that there are 2 different stories, for an infalling observer and an...

Aug2113 03:13 AM
Dmitry67

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891 
In post #549 here I answered:
And then I was surprised by the comment of Tom, asking how the pairing was done....

Aug2113 03:32 AM
mitchell porter

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72,292 
Hi all,
I was thinking about the Holographic Universe theory today and wondered...
...If the universe was a...

Aug2213 11:34 AM
ibzy

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992 
This thread is in part belated appreciation of J.S.Engle's seemingly orderly systematic way of doing research, and...

Aug2313 12:13 AM
marcus

0 
693 
... due to whatever. What has the effort provided besides showing that the universe doesn't work a certain way?...

Aug2313 05:52 AM
Beer w/Straw

14 
1,306 
hi
quantum gravity has many problems, I find up to now.
I think this problems are conceptual and mathematical
is it...

Aug2413 04:41 AM
QGravity

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1,072 
This was just posted
http://arxiv.org/abs/1308.2206
Energetic Causal Sets
Marina Cortęs, Lee Smolin
(Submitted...

Aug2413 06:57 PM
audioloop

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2,520 
I may have poorly titled this post, since the lecture I'm talking about isn't just about tachyons, really. What I'm...

Aug2613 06:05 AM
trimok

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938 
This seems to be the most interesting development in QG currently. I want to know what you think might present serious...

Aug2613 07:44 PM
marcus

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1,802 
In the context of the recent Fuzz or Fire workshop,
http://online.kitp.ucsb.edu/online/fuzzorfire_m13/
I would...

Aug2613 07:53 PM
atyy

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753 
Black holes have an entropy, but they evaporate. At the end of the evaporation, the entropy is greater than the...

Aug2713 12:40 AM
Chronos

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927 
Hi all,
What is the Hamiltonian or main equation, that if you solve it, parallel universes are predicted?
For...

Aug2713 09:42 PM
julian

6 
1,295 
Why string field theory doesn't explane a black singularity but its called the theory of everything?
It just...

Aug2913 02:24 AM
SteamKing

5 
987 
Are the strings in MTheory impermanent, do they decay for example?(I am not a physicist, curious from a philosophical...

Aug3013 02:20 PM
WillyB

4 
856 
Hi all,
This is an entirely new question, separate from the post I just asked. I am just learning about parallel...

Aug3113 11:25 PM
MathematicalPhysicist

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1,232 
Chris Duston's talk on this starts at minute 43 of this video: http://pirsa.org/13070085
If you download the slides...

Sep213 05:42 PM
marcus

8 
990 
"Gauge" is normally understood as "mathematically redundant"
Why are gauge theories so prevalent? Why do they...

Sep313 07:57 PM
arivero

65 
4,892 
We have had several threads that discuss the 2009 prediction of the Higgs boson mass by Shaposhnikov and Wetterich,...

Sep413 04:37 AM
mitchell porter

1 
1,421 
Hey everybody, I have a few questions about membranes in string theory, so here it goes. What is meant by the membrane...

Sep1013 08:23 PM
Chronos

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789 
Hi, sorry for the quite long text. Thanks in advance for any help!
I am a little confused about the different...

Sep1013 08:50 PM
Physics Monkey

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1,321 
Hi, I don't know any physics, but I wondered if I could get a physicist to indulge me by telling me the most obvious...

Sep1613 08:33 PM
julian

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1,317 
This was just posted on arxiv. It seems to be of general interest so here's a thread in case anyone wants to discuss...

Sep1813 04:11 PM
marcus

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2,526 
Bee Hossenfelder has proposed a new approach to QG phenomenology, involving new ways to look for signs that spacetime...

Sep1913 01:49 AM
Paulibus

22 
2,601 
Hello,
Can anybody please explain what is super symmetry and what is special unitary group?
I read Wikipedia but...

Sep1913 05:57 AM
shounakbhatta

2 
796 
If it's okay to post this, here's a video about string theory. You can't really learn any physics from it, but it's...

Sep1913 09:49 AM
Greg Bernhardt

1 
1,057 
The new geometric version of quantum field theory could also facilitate the search for a theory of quantum gravity...

Sep1913 03:01 PM
korialstasz

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1,375 
According to string theory there are an extra 7 spatial dimensions curled up at every point in space. They are so...

Sep2113 09:43 AM
bapowell

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807 
Hi,
Unfortunately I am not actively involved in physics anymore since high school, but still very interested in the...

Sep2313 09:04 PM
Trenton

6 
1,622 
Hi there!
Smatrix is Path Integral with Vertex Operators inserted. I know how to compute ShapiroVirasoro...

Sep2413 05:47 AM
Korybut

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970 
Nice posting by Bee Hossenfelder on her Blog !..
...

Sep2413 05:49 PM
atyy

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It has be mentioned the real singlet extension of the Standard Model by Chamseddine and Connes. But I favour a pair of...

Sep2513 02:20 PM
nicoo

4 
2,281 
Hi,
I am looking to find the invariants of products of fields under SU(5) and other possible gauge groups (but lets...

Sep2613 01:14 PM
fzero

3 
800 