170 citations · 291 across the 9 of their papers we have counts for
9 papers
More on A Statistical Analysis of Log-Periodic Precursors to Financial Crashes
James A. Feigenbaum
We respond to Sornette and Johansen's criticisms of our findings regarding log-periodic precursors to financial crashes. Included in this paper are discussions of the Sornette-Joha…
A Statistical Analysis of Log-Periodic Precursors to Financial Crashes
James Feigenbaum
Motivated by the hypothesis that financial crashes are macroscopic examples of critical phenomena associated with a discrete scaling symmetry, we reconsider the evidence of log-per…
Born-Regulated Gravity in Four Dimensions
James A. Feigenbaum
Previous work involving Born-regulated gravity theories in two dimensions is extended to four dimensions. The action we consider has two dimensionful parameters. Black hole solutio…
Discrete Scale Invariance and the "Second Black Monday"
James A. Feigenbaum, Peter G. O. Freund
Evidence is offered for log-periodic (in time) fluctuations in the S&P 500 stock index during the three years prior to the October 27, 1997 "correction". These fluctuations were ex…
Gravitational Analogues of Non-linear Born Electrodynamics
James A. Feigenbaum, Peter G. O. Freund, Mircea Pigli
Gravitational analogues of the nonlinear electrodynamics of Born and of Born and Infeld are introduced and applied to the black hole problem. This work is mainly devoted to the 2-d…
High Energy Hadronic Total Cross-Sections
James A. Feigenbaum, Peter G. O. Freund, Mircea Pigli
High energy hadronic total cross-section data are found to agree with the predictions of a QCD-string picture.
T-Duality Considerations for Hadronic Strings
James A. Feigenbaum, Peter G. O. Freund, Mircea Pigli
We show that a simple account of hadronic high energy total cross-sections and of the observed masses and flavor-gauge-like couplings of the familiar vector mesons is obtained in a…
Discrete Scaling in Stock Markets Before Crashes
James A. Feigenbaum, Peter G. O. Freund
We propose a picture of stock market crashes as critical points in a hierachical system with discrete scaling. The critical exponent is then complex, leading to log-periodic fluctu…
A -deformation of the Coulomb Problem
J. Feigenbaum, P. G. O. Freund
The algebra of observables of -symmetric quantum mechanics is extended to include the inverse of the radial coordinate and used to obtain eigenvalues and e…