Tachyons are hypothetical particles that are theorized to travel faster than the speed of light. The concept of tachyons was first introduced by physicist Arnold Sommerfeld in 1904, and further developed by physicist Gerald Feinberg in 1967.
Tachyons are purely speculative and have not been observed in experiments or detected in any physical phenomena. Physicists believe that faster-than-light particles cannot exist because they are inconsistent with the known laws of physics. If such particles did exist they could be used to send signals faster than light.Arnold Sommerfeld (1868–1951) was a German theoretical physicist who made significant contributions to the development of quantum theory and atomic physics.
Born in Königsberg, Germany (now Kaliningrad, Russia), Sommerfeld studied under renowned physicist Wilhelm Conrad Röntgen[1]. He became a professor at the University of Munich, where he mentored a generation of physicists, including Wolfgang Pauli and Werner Heisenberg[2]. Sommerfeld is particularly known for his work on the Bohr model of the atom,
extending it to include elliptical orbits and introducing the azimuthal quantum number, which laid the foundation for the quantum theory of angular momentum. His contributions to quantum theory and the training of future physicists have left a lasting impact on the field. Gerald Feinberg (1933–1992) was an American physicist known for his contributions to theoretical physics and cosmology. Born in New York City,
Feinberg earned his Ph.D. from Columbia University in 1956 and subsequently held positions at various institutions, including Columbia University and the Massachusetts Institute of Technology (MIT). In 1967, he proposed the concept of tachyons, hypothetical particles that travel faster than the speed of light, introducing the idea in a seminal paper titled “Possibility of Faster-Than-Light Particles.” He had been inspired by the science-fiction story “Beep” by James Blish[3]. While the concept of tachyons remains speculative and has not been experimentally validated,
Feinberg’s work has sparked discussions and debates within the physics community. Apart from his contributions to particle physics, Feinberg also made significant contributions to the field of astrophysics and cosmology, exploring topics such as dark matter and the early universe. The theory behind tachyons is rooted in the equations of special relativity, particularly in the consideration of particles with imaginary mass.
In conventional physics, particles with imaginary mass would imply a square root of a negative mass in the equations, leading to the suggestion that such particles could move faster than the speed of light. However, the existence of tachyons poses significant challenges to our current understanding of physics, including causality violations and paradoxes associated with time travel.
Despite the intriguing nature of the concept, there is currently no experimental evidence supporting the existence of tachyons, and they remain purely speculative within the realm of theoretical physics. Many physicists regard the idea of tachyons with skepticism, and they are not incorporated into mainstream physics models.
Footnotes
- Wilhelm Conrad Röntgen (1845–1923) was a German physicist who is best known for the discovery of X-rays in 1895, a groundbreaking achievement that earned him the first Nobel Prize in Physics in 1901. Röntgen’s discovery had a profound impact on medicine, allowing for the visualization of internal structures within the human body. His work laid the foundation for the field of radiology. [Back]
- Wolfgang Pauli (1900–1958) and Werner Heisenberg (1901–1976) were prominent figures in the development of quantum mechanics. Austrian-born Pauli is best known for the Pauli exclusion principle, which states that no two electrons in an atom can occupy the same quantum state simultaneously. This principle played a crucial role in understanding the behavior of electrons within atomic structures. German physicist Heisenberg formulated matrix mechanics, a fundamental formulation of quantum mechanics, and introduced the famous Heisenberg uncertainty principle, highlighting the inherent limitations in simultaneously measuring certain pairs of properties, such as position and momentum, with arbitrary precision. Both Pauli and Heisenberg were key contributors to the quantum revolution in the early 20th century and played vital roles in shaping the field of theoretical physics. [Back]
- James Blish (1921–1975) was an American science fiction writer and critic, known for his prolific contributions to the genre. Born in East Orange, New Jersey, Blish wrote a diverse range of science fiction works, including novels, short stories, and critical essays. He is perhaps best remembered for his Cities in Flight series, which explores the concept of entire cities being able to travel through space. Blish also adapted episodes of the Star Trek television series into novel form, contributing to the Star Trek novelizations. Beyond his creative writing, Blish was a thoughtful critic, providing insights into the genre and its cultural impact. His works often delved into philosophical and ethical themes, making him a respected figure in the science fiction community. [Back]
Further Reading
Sources
- Feinberg, G. (1967). Possibility of Faster-Than-Light Particles. Physical Review, 159(5), 1089–1105. https://doi.org/10.1103/PhysRev.159.1089
- Overbye, D. (1992). Gerald Feinberg, 59, Dies; Theorist of Particle Physics. The New York Times. https://www.nytimes.com/1992/05/26/obituaries/gerald-feinberg-59-dies-theorist-of-particle-physics.html
- Sommerfeld, A. (1916). Zur Quantentheorie der Spektrallinien. Annalen der Physik, 356(1), 1–94. https://doi.org/10.1002/andp.19163560102
- Astronomy “If tachyons exist, how might they be detected?” https://www.astronomy.com/science/if-tachyons-exist-how-might-they-be-detected/
- Wikipedia “Tachyon” https://en.wikipedia.org/wiki/Tachyon
- Röntgen, W. C. (1895). On a new kind of rays. Nature, 53(1369), 274–276. https://doi.org/10.1038/053274b0
- Nobel Prize in Physics 1901 – Wilhelm Conrad Röntgen. (n.d.). NobelPrize.org. https://www.nobelprize.org/prizes/physics/1901/rontgen/biographical/
- Pauli, W. (1925). Über den Zusammenhang des Abschlusses der Elektronengruppen im Atom mit der Komplexstruktur der Spektren. Zeitschrift für Physik, 31(1), 765–783. https://doi.org/10.1007/BF02980631
- Heisenberg, W. (1925). Über quantentheoretische Umdeutung kinematischer und mechanischer Beziehungen. Zeitschrift für Physik, 33(1), 879–893. https://doi.org/10.1007/BF01328377
