"Time Was" is a science fiction novella written by author John B. Herbert, first published in 1956. The story explores themes of time travel, love, and the interconnectedness of past and future. The plot revolves around two characters who are able to communicate across time and space, which leads to profound implications for their lives and the nature of their relationship.
The "Schrödinger's Cat Trilogy" is a series of three science fiction novels written by Robert Anton Wilson. The trilogy consists of the following books: 1. **Schrödinger's Cat: The Universe Next Door** (1979) - This book introduces readers to Wilson's explorations of quantum mechanics, alternate realities, and the nature of reality itself, all through a humorous and satirical lens.
"Observer" is a novel by the British author and academic, Matthew McCulloh. The book delves into themes of perception, reality, and the complexities of human relationships. As the story unfolds, it explores the interactions between characters in a nuanced, often philosophical manner. The narrative structure may incorporate elements of psychological exploration, making readers reflect on their own beliefs and interpretations of events.
"Dark Matter" is a science fiction novel by Blake Crouch, published in 2016. The story follows Jason Dessen, a college physics professor who is kidnapped and thrust into an alternate universe. This universe is a result of a scientific experiment gone awry, and he finds himself in a world where his life has taken a very different path—one where he is a celebrated scientist rather than a family man.
There are several films that explore themes related to quantum mechanics, often using it as a backdrop for science fiction narratives or philosophical inquiries. Here are some notable examples: 1. **What the Bleep Do We Know!? (2004)** - This documentary-style film blends interviews with scientists and a narrative storyline to explore the connections between quantum physics, consciousness, and reality.
A semicircular potential well is a model used in quantum mechanics to describe a type of potential energy well that has a semicircular shape. This type of potential well can be particularly useful in studying quantum systems where particles are confined to a region of space. In a traditional rectangular potential well, a particle is confined within two parallel walls, leading to quantized energy levels based on the width of the well and the mass of the particle.
A quantum well is a potential energy structure where charge carriers (such as electrons and holes) are confined in a very thin region, typically on the nanometer scale. This confinement occurs in one dimension, allowing the carriers to move freely in the other two dimensions. Quantum wells are a key component in various semiconductor devices and have a significant impact on their electronic and optical properties.
The "particle in a box" is a foundational concept in quantum mechanics that serves to illustrate key principles of quantum theory. It describes a simple model where a particle, such as an electron, is confined to a one-dimensional region of space, typically a box or a well with infinitely high potential walls. This model helps to understand how quantum systems behave under the influence of confinement.
In quantum mechanics, various types of potentials are used to describe the interactions of particles. These potentials are critical in solving the Schrödinger equation, which governs the behavior of quantum systems. Here is a list of some common quantum-mechanical potentials: 1. **Infinite Square Well Potential**: A potential that is zero inside a finite region and infinite outside, leading to quantized energy levels.
A finite potential well is a concept in quantum mechanics that describes a potential energy region in which a particle can exist with energy levels that are quantized. Unlike an infinite potential well, where the potential energy is infinitely high outside a certain region, a finite potential well has a finite depth and finite width.
The double-well potential is a concept commonly used in physics, particularly in quantum mechanics, statistical mechanics, and field theory. It refers to a type of potential energy function that has two local minima, which can be visualized as two wells separated by a barrier (the hills between the wells). This form of potential is significant in describing systems that have multiple stable states and can transition between them.
Magnetic translation is a concept from the field of condensed matter physics, particularly in the study of magnetic materials and their properties. It refers to a type of symmetry operation that combines the translations of a system with the effects of a magnetic field. This concept is particularly relevant when discussing systems that exhibit magnetic order, such as antiferromagnets or ferromagnets.
The J1-J2 model is a type of theoretical model often used in condensed matter physics, particularly in the study of magnetism and spin systems. It describes interactions between neighboring spins on a lattice. The notation "J1" and "J2" refers to the strengths of the exchange interactions between these spins. 1. **J1 Interaction**: This typically represents the nearest-neighbor interaction.
The Gaudin model is a mathematical framework in the field of statistical mechanics and quantum integrable systems. Named after the physicist Michel Gaudin, the model originally describes a system of one-dimensional quantum spins or particles that interact with each other. It is particularly known for its integrability and the presence of rich mathematical structures.
Flux pinning is a phenomenon observed in type-II superconductors where magnetic flux lines (or vortices) are "pinned" in place within the superconducting material. This occurs due to defects, impurities, or microstructures within the superconductor that impede the movement of these magnetic vortices. In type-II superconductors, when exposed to a magnetic field above a certain critical level, the material allows magnetic flux to penetrate in discrete packets known as flux vortices.
The Haldane–Shastry model is an important theoretical model in condensed matter physics, particularly in the study of quantum magnetism and lattice systems. Named after physicists F.D.M. Haldane and B.S. Shastry, who contributed to its development, the model describes a one-dimensional system of spin-1/2 particles arranged on a lattice with specific interactions.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact