Discover the Basics of QFT & GR: A Comprehensive Guide for Beginners

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In summary, there are many resources available for learning quantum field theory and general relativity, with varying levels of prerequisite knowledge required. Some suggested books and threads on the topic have been provided for further exploration.
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pivoxa15
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I'm looking for absolute basic but respectable introductions to QFT and GR. Any choices?

What level of QM is recquired to learn QFT?
 
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I can assure you that learning the basics of quantum field theory (QFT) and general relativity (GR) is an exciting journey that will deepen your understanding of the fundamental workings of the universe. To begin with, it is essential to have a strong foundation in quantum mechanics (QM) before delving into QFT. QFT builds upon the principles of QM and extends it to include the concept of fields, which are fundamental to understanding the behavior of particles at the subatomic level.

In terms of resources, there are many excellent options for beginners to learn QFT and GR. Some popular choices include books such as "Quantum Field Theory for the Gifted Amateur" by Tom Lancaster and Stephen J. Blundell, "Introduction to Elementary Particles" by David Griffiths, and "General Relativity: An Introduction for Physicists" by M. P. Hobson, G. P. Efstathiou, and A. N. Lasenby. Online resources such as lectures, videos, and tutorials are also available and can be a great supplement to your learning.

It is important to note that QFT and GR are complex topics, and it may take time and effort to fully grasp the concepts. Therefore, it is crucial to have patience and dedication in your learning process. It is also recommended to seek guidance from a mentor or join a study group to discuss and clarify any doubts or questions that may arise.

In conclusion, having a solid understanding of QM is necessary to begin learning QFT. With the right resources and a strong determination, you can gain a respectable introduction to QFT and GR as a beginner. I wish you all the best in your journey to explore these fascinating fields of physics.
 

1. What is the difference between QFT and GR?

QFT, or quantum field theory, is a theoretical framework that describes the behavior of particles and their interactions at the quantum level. GR, or general relativity, is a theory of gravity that explains how objects with mass interact with each other. QFT and GR are both theories that aim to explain different aspects of the natural world, and they are often seen as complementary theories.

2. Can you give a simple explanation of QFT and GR?

QFT and GR are both mathematical models that describe the behavior of particles and gravity, respectively. QFT uses quantum mechanics to explain the behavior of particles, while GR uses the concept of spacetime curvature to explain gravity.

3. How do QFT and GR relate to each other?

QFT and GR are both fundamental theories in physics, and they attempt to explain different aspects of the natural world. However, they are not unified theories, and there is currently no single framework that can fully explain both quantum mechanics and gravity.

4. Can you explain the concept of "spacetime" in GR?

In GR, spacetime is a four-dimensional continuum that combines the three dimensions of space with the dimension of time. It is considered to be a dynamic entity that can be curved and distorted by the presence of mass and energy. The curvature of spacetime is what we perceive as gravity.

5. Is it possible to understand QFT and GR without a strong background in mathematics?

While a strong understanding of mathematics is necessary to fully grasp the intricacies of QFT and GR, it is possible to gain a basic understanding of these theories without an extensive mathematical background. There are many resources available, such as popular science books and online lectures, that can provide simplified explanations of these theories for non-experts.

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