👀 #maths

This is Einstein equation written explicitly in terms of the metric tensor (the last equation) #physics #scicomm

Seems like my podcast interview with @superconformal.bsky.social is up. I frankly cannot watch myself talking in a video as it gives me a creep, but in case anyone wants to watch it here is the link youtu.be/pvRoC3O3eNY?...

I am on substack now. I will be putting all my past threads on substack as well. Future threads will appear on Twitter, Substack, and my website. Thanks. superconformalhassaan.substack.com?r=26tdsb&utm...

Had an insightful discussion with Manki Kim ( @renet.bsky.social ) on KKLT and other topics. The full discussion will be uploaded soon. #physics #scicomm

Dr. Daniel Whiteson is coming to the podcast. He is an experimental high-energy physicist, working on the ALTAS experiment. He also does science outreach, which includes creating the series "Elinor Wonders Why". What questions do you have for him? Let me know in the comments. #physics #scicomm

The podcast episode with Zohar Komargodski is out now. Go watch!! #physics #scicomm #Podcast youtu.be/WjRnFUxdfAE

Dr. Rajesh Gopakumar is coming to the podcast. He is a theoretical physicist at and the head of ICTS Bangalore. He has worked on topological strings, holographic duality, and CFTs, among other things. What questions do you have for him? Let me know in the replies. Thanks. #physics #scicomm #podcast

Recording of the live session at Zetagravit. The audio drops at certain places because of losing the connection. Twitter: x.com/i/spaces/1Ow... YouTube: www.youtube.com/live/j84ElX-...

Finally, I got a slightly bigger book shelf. Thanks @quantumfoundations.bsky.social for the birthday gift ✌️ #reading #books

Had a wonderful and long discussion with Dr. Zohar Komargodski regarding different topics (including RG flows, generalized symmetries, alternative theories, and hep-th job market). The full podcast will be released soon. This episode is over 3 hours long, so brace yourselves 😅 #physics #scicomm

I will appear on Zetagravit for a live session to discuss topics in string theory. This session will be live on X and YouTube. It will happen on 14th December at 10:30 am Eastern time (9 pm Indian standard time). I hope you can join this session. #physics #scicomm

Just realized this common trait 😒 #physics #scicomm

If I ever had to swear in court, I would use one of these books to swear on. #Physics #scicomm

Dr. Nabil Iqbal is coming to the podcast. He is a theoretical physicist at Durham University, working on generalized symmetries, CFTs, RG flows, and related areas. What questions do you have for him? Let me know in the replies. #physics #scicomm

Dr. Zohar Komargodski is coming to the podcast. He is a theoretical physicist at Stony Brook University (and Simon Center for Geometry and Physics), working on CFTs, RG flows, symmetry enhancement, and related topics. What questions do you have for him? Let me know in the comments. #physics #scicomm

Of course, it isn't dead #physics #scicomm knowablemagazine.org/content/arti...

The podcast episode with Dr. Raghu Mahajan has been uploaded. Go watch!! #Physics #scicomm #podcastandchill youtu.be/f9H8WHirreA

Good to see this. Latest Royal Institute lecture on string theory. youtu.be/B-47G6XKFfA?... #physics #scicomm

I really want the polls feature on Bluesky #bluesky #bsky #polls

Just another map of the string theory duality frames. #physics #scicomm

Had a nice conversation with Dr. Raghu Mahajan. We talked about string theory as a whole and about the careers of younger scientists. The full episode will be uploaded soon. #physics #scicomm #Podcast

I submitted a request to the Bsky team for two changes to the Bsky website. 1) Internal bookmarking 2) The ability to turn off notifications for likes (I can't find a way to do it). I hope they make these changes soon. Are there any other changes that you think are important?

We had our annual conference in our department today (called PASCAL). I gave a talk on some of my work on 2D CFTs. It was fun. #physics #scicomm #research

Why criticizing string theory has become a "cool thing"? In the last few years, I, many of my friends & colleagues have noticed that many people (physicists & non-physicists) have started to criticize string theory. It is becoming the new "cool thing to do". 1/39 #physics #scicomm

Let's do a small thread on D-Branes and their charges. Before starting, let's review some familiar concepts so that it is easy to understand what follows. 1/13 #physics #scicomm #research

"Have we found all string theories?" This brief post answers the question mentioned above. It'll require a basic understanding of QFT and symmetry algebras. I'll spend some time on background material before answering the question mentioned at the start. 1/33 #Physics #scicomm

So we have done a post on type II strings and a post on heterotic strings in the past. Now, let's do a post on type I strings to cover all 5 known consistent superstring theories. 1/24 #physics #scicomm #academia #research

Just a random thing that I like: I love how the tadpole cancellation in open string theory determines the allowed gauge group. A small explanation of this thing follows but it will be a little technical and requires some familiarity with basic QFT. 1/5 #Physics #scicomm

Why do we have two heterotic theories i.e. SO(32) heterotic and E8 X E8 heterotic? How do we come to this conclusion? I will present some results without derivation because their derivation requires calculations. 1/23 #Physics #scicomm #research

Let's review briefly why we have two Type II string theories. I will present some results without full derivation because maths is required to do them but feel free to ask any question about the intervening steps and I will try to answer. 1/20 #Physics #research #Scicomm

A thread on how to proceed to get realistic 4D spacetimes from type IIA & IIB string theories. I'll try to explain the technical points. I'll assume the knowledge of metric, Ricci & Riemann tensors + very basic QFT. Let me know if you need clarification on some points. 1/29 #physics #scicomm

This is the second of my series of posts on AdS3/CFT2 correspondence. In this post, I will describe what the WZW (Wess-Zumino-Witten) models are. They are relevant here because a WZW model is used to describe string theory on AdS3. 1/14 #Physics #scicomm

This is the first in a series of posts on duality between strings moving on AdS3 x S3 x T4 spacetime (don't get intimidated by this) and a conformal field theory living on the boundary of the AdS3 spacetime (which is two-dimensional). 1/15 #physics #scicomm

This is a post in which I am just thinking out loud (writing your thoughts down is a great way to think out loud and organize your thoughts). The things that I write in this post may also be beneficial for some younger students of theoretical physics 1/32 #physics #scicomm

In this post, I will explain what the Renormalization Group (RG) flow is. I will assume the knowledge of the basics of QFT for this post. 1/54 #physics #scicomm

This post summarizes the main ideas behind supersymmetry. Pre-requisites to read this post include some familiarity with Poincare algebra and the basics of quantum field theory (especially the basics of fermions) 1/33 #physics #scicomm

This is a post to describe how we construct the standard model lagrangian and generate the masses for gauge bosons and fermions. I will assume basic familiarity with QFT, lagrangians, gauge transformations, and gauge groups (like U(1), and SU(2)). 1/65 #physics #scicomm

This is a small post to argue that (-+++) metric is objectively better than the (+ – – -) metric. Before starting, let me mention that I studied QFT in the (+ – – -) metric (from Peskin and Schroeder). 1/17 #Physics #scicomm

In this post, we will go through the reasoning that gives us the Schwarzchild solution of Einstein field equations. Prerequisites for this post include familiarity with Einstein field equations. 1/23 #physics #scicomm

A thread of my Physics threads

This is a post that tries to answer the question, “How do we come to know that in string theory, there ‘can be’ extra dimensions in space?”. 1/25 #physics #scicomm

Dr. Raghu Mahajan is coming to the podcast. He's a physicist at ICTS Bengaluru, who has worked on many areas, including the Islands approach to black holes. In this episode, we'll focus on the interesting problems in string theory. What questions do you have for him? Let me know. #Physics #scicomm

This is a small thread for references to read (and watch, in the case of videos) to learn about the basics of generalized symmetries. The references are given at the end of the thread. Please feel free to add references to this thread. 1/8 #physics #scicomm

Haven't checked in on the Bluesky community in a while. Will shift to this app permanently maybe. Lez see

The conference photo from Eurostrings 2024, held at the University of Southampton, UK. It was a very fun conference to attend. You can see me in the middle of the second row. #physics #academia #research

This is a long thread for a chapter-by-chapter review and a reading guide for volume 1 of Polchinski’s book on string theory. Familiarity with the basics of QFT and GR is required (you will need these pre-requisites to read the book anyway) 1/69 #physics #scicomm

In this small thread, I will show why the first few possible corrections to the Einstein-Hilbert action are the way they are. Basic familiarity with General Relativity is assumed. 🧵 1/31 #physics #scicomm

Hassaan doing his part to bring some physics over here.

In this post, I will give arguments to explain why the Schrodinger equation has the form that it has. I will try to give enough mathematical details so that the reader can understand the argument easily. 1/29 #Physics #scicomm